May 2007May 2007 IEEE 802.15IEEE 802.15--07/685r107/685r1
Abbie Mathew, Abbie Mathew, NewLANSNewLANSSlide Slide 11SubmissionSubmission
Project: IEEE P802.15 Working Group for Wireless Personal Area NProject: IEEE P802.15 Working Group for Wireless Personal Area Networksetworks
Submission Title:Submission Title: [An Innovative High Speed Modem Implementation][An Innovative High Speed Modem Implementation]Date Submitted: Date Submitted: [May 6,2007][May 6,2007]Source:Source: [Abbie Mathew] Company [[Abbie Mathew] Company [NewLANSNewLANS, Inc.], Inc.]Address [43 Address [43 NagogNagog Park, Suite 200, Westford, MA 01720, U.S.A.]Park, Suite 200, Westford, MA 01720, U.S.A.]Voice: [(978) 849Voice: [(978) 849--8000], E8000], E--Mail: [[email protected]]Mail: [[email protected]]Re:Re: [][]Abstract: Abstract: [[NewLANSNewLANS proposal]proposal]Purpose:Purpose: [Contribution to 802.15 TG3c interim in Montreal, Canada][Contribution to 802.15 TG3c interim in Montreal, Canada]Notice:Notice: This document has been prepared to assist the IEEE P802.15. It This document has been prepared to assist the IEEE P802.15. It is offered is offered as a basis for discussion and is not binding on the contributingas a basis for discussion and is not binding on the contributing individual(s) or individual(s) or organization(s). The material in this document is subject to chaorganization(s). The material in this document is subject to change in form and content nge in form and content after further study. The contributor(s) reserve(s) the right to after further study. The contributor(s) reserve(s) the right to add, amend or withdraw add, amend or withdraw material contained herein.material contained herein.Release:Release: The contributor acknowledges and accepts that this contribution The contributor acknowledges and accepts that this contribution becomes becomes the property of IEEE and may be made publicly available by P802.the property of IEEE and may be made publicly available by P802.15.15.
May 2007May 2007 IEEE 802.15IEEE 802.15--07/685r107/685r1
Abbie Mathew, Abbie Mathew, NewLANSNewLANSSlide Slide 22SubmissionSubmission
Scope of ProposalScope of Proposal
Focus on the modem
Objective to work with companies with core competence in 60 GHz MMIC, antenna and digital circuitry for an integrated solution
May 2007May 2007 IEEE 802.15IEEE 802.15--07/685r107/685r1
Abbie Mathew, Abbie Mathew, NewLANSNewLANSSlide Slide 33SubmissionSubmission
A synchronous clock encoding technique in PAM transmissionA synchronous clock encoding technique in PAM transmissionThree level systemThree level system
•• Logical 0 is represented by no symbolLogical 0 is represented by no symbol•• Logical 1 by pulses of alternating polarityLogical 1 by pulses of alternating polarity
Inherent limited error detecting capabilityInherent limited error detecting capabilityZero spectral density at 0 and 1/(2.Baud Period)Zero spectral density at 0 and 1/(2.Baud Period)No DC componentNo DC component
Bipolar Coding FeaturesBipolar Coding FeaturesSummarySummary
May 2007May 2007 IEEE 802.15IEEE 802.15--07/685r107/685r1
Abbie Mathew, Abbie Mathew, NewLANSNewLANSSlide Slide 44SubmissionSubmission
1 0 011 10
Digital Stream
1 +1 0 0+1-1 -10
Bipolar Stream
+1
Logical 1s represented by alternating polarityLogical 1s represented by alternating polarity
Logical 0 represented by no symbolLogical 0 represented by no symbol
Three Level SystemThree Level SystemBipolar CodingBipolar Coding
May 2007May 2007 IEEE 802.15IEEE 802.15--07/685r107/685r1
Abbie Mathew, Abbie Mathew, NewLANSNewLANSSlide Slide 55SubmissionSubmission
1 1 111 11
Digital Stream
1 +1 -1 +1-1+1 +1-1
Bipolar Stream
-1
Bipolar ViolationBipolar Violation
Consecutive pulses cannot have the same polarityConsecutive pulses cannot have the same polarity
Error DetectionError DetectionBipolar CodingBipolar Coding
May 2007May 2007 IEEE 802.15IEEE 802.15--07/685r107/685r1
Abbie Mathew, Abbie Mathew, NewLANSNewLANSSlide Slide 66SubmissionSubmission
Bipolar Coding With Dual RailBipolar Coding With Dual Rail
Scope CaptureScope Capture
Dual Rail ConceptDual Rail Concept
May 2007May 2007 IEEE 802.15IEEE 802.15--07/685r107/685r1
Abbie Mathew, Abbie Mathew, NewLANSNewLANSSlide Slide 77SubmissionSubmission
Zero spectral density at 0 and 1/(2T)Zero spectral density at 0 and 1/(2T)No DC componentNo DC component
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 20
0.5
1
M(f)
Frequency, GHz1/(2.Baud Period) = 1/(2T)1/(2.Baud Period) = 1/(2T)T = 0.25 nsT = 0.25 ns
Power Density ProfilePower Density ProfileBipolar Coding With Dual RailBipolar Coding With Dual Rail
May 2007May 2007 IEEE 802.15IEEE 802.15--07/685r107/685r1
Abbie Mathew, Abbie Mathew, NewLANSNewLANSSlide Slide 88SubmissionSubmission
0 0.4 0.8 1.2 1.6 2.0 2.40
0.5
1
0 0.4 0.8 1.2 1.6 2.0 2.40
.5
1
0 0.4 0.8 1.2 1.4 2.00
0.250.500.75
1
Frequency, GHz
AA
BB
CC
Square root raised cosine filter
Dual Rail Bipolar
AA BB∗ =-0.5 0 0.5-2
-1.5
-1
-0.5
0
0.5
1
1.5
2
Time
Am
plitu
de
Eye Diagram
+T-T
PilotPilotPilotPilot
Pulse ShapePulse Shape
T= 0.25 nsT= 0.25 ns
May 2007May 2007 IEEE 802.15IEEE 802.15--07/685r107/685r1
Abbie Mathew, Abbie Mathew, NewLANSNewLANSSlide Slide 99SubmissionSubmission
Inserted at 0 and 1/(2T), points of zero power densityInserted at 0 and 1/(2T), points of zero power density•• Minimum effect on peakMinimum effect on peak--toto--averageaverage--power ratiopower ratio
Clock always coherent with data signalClock always coherent with data signal
Features offeredFeatures offered•• Relatively immune to phase noise and frequency errors at 60 Relatively immune to phase noise and frequency errors at 60
GHzGHz
•• Fast data recovery (Fast data recovery (∼∼100 ns) by virtue of no 100 ns) by virtue of no CostasCostas looploop
•• Fast AGC (40 dB dynamic range, 1% of actual value in Fast AGC (40 dB dynamic range, 1% of actual value in ∼∼10 10 µµs)s)
Pilot TonesPilot Tones
May 2007May 2007 IEEE 802.15IEEE 802.15--07/685r107/685r1
Abbie Mathew, Abbie Mathew, NewLANSNewLANSSlide Slide 1010SubmissionSubmission
x4500 MHz Clock
Serial Digital Input
Frequency Output1.5 to 2.0 GHz
Square root raised cosine filter
LIQ
Hilbert Transformer
Bipolar Encoder
Functional Block DiagramFunctional Block DiagramExisting Prototype (500 MHz, 1 Existing Prototype (500 MHz, 1 GbpsGbps))
11111111--0101 (F5)0101 (F5)
PP11
PP22
1.5 GHz1.5 GHz 2.0 GHz2.0 GHz
DataData
Transmit Bit PipeTransmit Bit Pipe
Receive Bit PipeReceive Bit Pipe
May 2007May 2007 IEEE 802.15IEEE 802.15--07/685r107/685r1
Abbie Mathew, Abbie Mathew, NewLANSNewLANSSlide Slide 1111SubmissionSubmission
Prototype SchedulePrototype Schedule
Bandwidth
Data Rate
500 MHz 1 GHz 2 GHz
1 Gbps
2 Gbps
4 Gbps
Done
Initiated
Planned
Proposal data based Proposal data based on existing prototypeon existing prototype
Proposing 4 Proposing 4 GbpsGbps per per channel solutionchannel solution
NoteNoteSpectral efficiency of 2 bps/HzSpectral efficiency of 2 bps/HzPrototype built on offPrototype built on off--thethe--shelf componentsshelf components
May 2007May 2007 IEEE 802.15IEEE 802.15--07/685r107/685r1
Abbie Mathew, Abbie Mathew, NewLANSNewLANSSlide Slide 1212SubmissionSubmission
Frequency DomainFrequency Domain
Time DomainTime Domain
1.5 GHz Pilot1.5 GHz Pilot
2.0 GHz Pilot2.0 GHz Pilot
Random DataRandom Data
No data, only pilotsNo data, only pilots99% (90%) of power (voltage) is 99% (90%) of power (voltage) is contributed by 2 GHz pilotcontributed by 2 GHz pilotQuestion Question -- how can how can ‘‘AA’’ be reduced?be reduced?
Data and pilotsData and pilots
20 dB20 dB
AA
Transmitted WaveformTransmitted WaveformFrequency Domain and Time DomainFrequency Domain and Time Domain
May 2007May 2007 IEEE 802.15IEEE 802.15--07/685r107/685r1
Abbie Mathew, Abbie Mathew, NewLANSNewLANSSlide Slide 1313SubmissionSubmission
Case 2 :Case 2 : Same LevelSame LevelCase 1 :Case 1 : 20 dB Difference20 dB Difference
Volt
Volt
Volt
Volt
Frequency (GHz)Frequency (GHz)Frequency (GHz)Frequency (GHz)
92 mV92 mV--10.7 10.7 dBm(VdBm(V))
9 mV9 mV--30.7 30.7 dBm(VdBm(V))
20 dB20 dB 9 mV9 mV--30.7 30.7 dBm(VdBm(V))
-60-40
-200
204060
0 1 2 3 4 5 6 7 8 9 10
Case 1: 20 dB differenceCase 2: Same level
Volt
(mV)
Volt
(mV)
Time (ns)Time (ns)
Drops from 100 Drops from 100 mVmVPP--PP to 18 to 18 mVmVPP--PP
9 mV9 mV--30.7 30.7 dBm(VdBm(V))
Time Domain PlotTime Domain Plot
Action: Action: Reduce p2 to the same level as p1Reduce p2 to the same level as p1Total power = Total power = --10.7 10.7 dBm(VdBm(V))
Total power = Total power = --27.7 27.7 dBm(VdBm(V))
Change in Pilot LevelChange in Pilot Level
May 2007May 2007 IEEE 802.15IEEE 802.15--07/685r107/685r1
Abbie Mathew, Abbie Mathew, NewLANSNewLANSSlide Slide 1414SubmissionSubmission
1.5 GHz Pilot1.5 GHz Pilot 2.0 GHz Pilot2.0 GHz Pilot
Lower Side Lower Side BandBand
Upper Side Upper Side BandBand
25 dB25 dB
NoteNoteWaveform at the output of Waveform at the output of TxTx base band bit pipebase band bit pipeLower side band block Lower side band block upconvertedupconverted to 60 GHzto 60 GHzExisting 60 GHz millimeter wave transceiver based on Existing 60 GHz millimeter wave transceiver based on GaAsGaAs devicesdevices
Transmitted WaveformTransmitted WaveformRejection of Upper SidebandRejection of Upper Sideband
30 dB in next 30 dB in next design spindesign spin
May 2007May 2007 IEEE 802.15IEEE 802.15--07/685r107/685r1
Abbie Mathew, Abbie Mathew, NewLANSNewLANSSlide Slide 1515SubmissionSubmission
Interference of Pilot TonesInterference of Pilot TonesAssumptions & AnalysisAssumptions & Analysis
2 GHz
250 MHz
250 MHz 200 MHz
QuestionQuestionCan pilots from adjoining channel interfere?Can pilots from adjoining channel interfere?
AssumptionAssumption
Dependent on base band implementation Dependent on base band implementation –– several options availableseveral options availableClosest an interfering pilot comes to the actual one is 250 MHzClosest an interfering pilot comes to the actual one is 250 MHz
May 2007May 2007 IEEE 802.15IEEE 802.15--07/685r107/685r1
Abbie Mathew, Abbie Mathew, NewLANSNewLANSSlide Slide 1616SubmissionSubmission
Partial response maximum likelihoodPartial response maximum likelihood decodingdecoding
Proven technology Proven technology –– used in disk drivesused in disk drives
Existing prototypeExisting prototype•• Partial response implementedPartial response implemented
•• Maximum likelihood not implemented in current design (500 Maximum likelihood not implemented in current design (500 MHz, 1 MHz, 1 GbpsGbps) ) –– will implement in next design spin (1 GHz, 2 will implement in next design spin (1 GHz, 2 GbpsGbps))
Maximum likelihood provides SNR gain of Maximum likelihood provides SNR gain of 22 dBdB
All implementation in analog domainAll implementation in analog domain
DecodingDecoding
May 2007May 2007 IEEE 802.15IEEE 802.15--07/685r107/685r1
Abbie Mathew, Abbie Mathew, NewLANSNewLANSSlide Slide 1717SubmissionSubmission
Design that focuses on low cost, high speed and low powerFlexible architecture – any digital input, with or without codingSpectral efficiency of 2 bps/Hz at 25% roll offPerformance comparable to 2-level PAMNo DACs or DSPsLow power, low latencyCan operate at 1 dB compression pointRelatively immune to phase noise and frequency errors at 60 GHzFast data recovery (~100 ns)Fast AGC (40 dB dynamic range, 1% of actual value in ∼10 µs)Fixed data rate and modulation – translates to simplicityUp to 12 Gbps
Due
to p
ilot t
ones
Modem FeaturesModem Features
May 2007May 2007 IEEE 802.15IEEE 802.15--07/685r107/685r1
Abbie Mathew, Abbie Mathew, NewLANSNewLANSSlide Slide 1818SubmissionSubmission
Current design supports all applications in the usage Current design supports all applications in the usage model and beyondmodel and beyond
4 4 GbpsGbps [2 GHz/channel] will meet most immediate applications[2 GHz/channel] will meet most immediate applications[2 GHz/channel] . [3 channels] . [2 bps/Hz] = 12 [2 GHz/channel] . [3 channels] . [2 bps/Hz] = 12 GbpsGbps
Two techniques to increase data rateTwo techniques to increase data rateChannel bondingChannel bonding•• Low power consumption, low complexityLow power consumption, low complexity
•• Margin drops by 3 dB per channel bondingMargin drops by 3 dB per channel bonding
Base band stackingBase band stacking•• Maintains marginMaintains margin•• Power consumption doubles, adds complexityPower consumption doubles, adds complexity
Migration PathMigration Path
May 2007May 2007 IEEE 802.15IEEE 802.15--07/685r107/685r1
Abbie Mathew, Abbie Mathew, NewLANSNewLANSSlide Slide 1919SubmissionSubmission
CommentsCommentsMeasurement Measurement & Analysis& AnalysisRxRxTxTxEnvironmentEnvironment##
Simulation based on 30Simulation based on 30°° RxRxAWGN channelAWGN channel
NICTNICT1515°°3030°°Residential, LOSResidential, LOSCM1.3CM1.3
Simulation based on 30Simulation based on 30°° RxRxNICTNICT1515°°6060°°Residential, LOSResidential, LOSCM1.2CM1.2
Channel Model EnvironmentsChannel Model Environments
May 2007May 2007 IEEE 802.15IEEE 802.15--07/685r107/685r1
Abbie Mathew, Abbie Mathew, NewLANSNewLANSSlide Slide 2020SubmissionSubmission
0 2 4 6 8 10 12 14 151510-6
10-5
10-4
10-3
10-2
10-1
100
Eb/N0 (dB)
Bit E
rror
Rat
e
AWGNAWGN with FEC(255, 239)95% availability95% availability with FEC(255, 239)90% availability90% availability with FEC (255, 239)
2 4 6 8 10 12 14 16 1810-6
10-5
10-4
10-3
10-2
10-1
100
Es/N0 (dB)
Bit E
rror
Rat
e
AWGNAWGN with FEC(255, 239)95% availability95% availability with FEC(255, 239)90% availability90% availability with FEC(255, 239)
BER vs. BER vs. EbEb/No Plot/No Plot BER vs. Es/No PlotBER vs. Es/No Plot
Linear polarizationLinear polarizationNo equalizationNo equalizationBER 10BER 10--6 6 (without FEC)(without FEC)
•• EbEb/No of 11 dB for AWGN/No of 11 dB for AWGN•• EbEb/No of 15 dB for 95% availability/No of 15 dB for 95% availability
CommentCommentPerformance can be improved by about 2 dB Performance can be improved by about 2 dB by considering circular polarization for LOS by considering circular polarization for LOS applicationsapplications
BER Plot BER Plot CM1.2, CM1.2, TxTx 3030°° ►► Rx 30Rx 30°°
May 2007May 2007 IEEE 802.15IEEE 802.15--07/685r107/685r1
Abbie Mathew, Abbie Mathew, NewLANSNewLANSSlide Slide 2121SubmissionSubmission
AWGNAWGN CM1.2 EnvironmentCM1.2 Environment
NoteNote: No FEC or equalization: No FEC or equalization
Power in antenna (at 1 dB CP) -3.1 dBmTx antenna gain [30º] 14.9 dBiRadiated power 11.8 dBm
Free space loss at 3.0 m 77.6 dBGaseous attenuation 0.0 dBMiscellaneous loss 0.0 dBAttenuation 77.7 dB
Rx antenna gain [30º] 14.9 dBiEffective power into receiver -51.0 dBm
KTB [2000 MHz, 290 K] -81.0 dBmReceiver noise figure 8.0 dBEb/No [ BER 10-6] 11.0 dBFEC gain 0.0 dBJitter 1.0 dBReceiver sensitivity -61.0 dBm
Margin 10.0 dB
Power in antenna (at 1 dB CP) 0.9 dBmTx antenna gain [30º] 14.9 dBiRadiated power 15.8 dBm
Free space loss at 3.0 m 77.6 dBGaseous attenuation 0.0 dBMiscellaneous loss 0.0 dBAttenuation 77.7 dB
Rx antenna gain [30º] 14.9 dBiEffective power into receiver -47.0 dBm
KTB [2000 MHz, 290 K] -81.0 dBmReceiver noise figure 8.0 dBEb/No [ BER 10-6, 95% availability] 15.0 dBFEC gain 0.0 dBJitter 1.0 dBReceiver sensitivity -57.0 dBm
Margin 10.0 dB
Link AnalysisLink AnalysisPortable Applications [3 m, 4 Portable Applications [3 m, 4 GbpsGbps]]
May 2007May 2007 IEEE 802.15IEEE 802.15--07/685r107/685r1
Abbie Mathew, Abbie Mathew, NewLANSNewLANSSlide Slide 2222SubmissionSubmission
Power (Power (dBmdBm) Into Antenna Versus Margin) Into Antenna Versus Margin
NoteNoteRefer to the previous slide for details on receiver sensitivityRefer to the previous slide for details on receiver sensitivityAdd about 2 dB for insertion loss in SP2T switch to determine poAdd about 2 dB for insertion loss in SP2T switch to determine power wer out of 60 GHz amplifierout of 60 GHz amplifier
-10.1
-8.1
-3.1
-6.1
0.9
-4.1
3
5
10
Mar
gin,
dB
CM1.2, BER= 10-6, 95% availability
AWGN
Link AnalysisLink AnalysisPortable Applications [3 m, 4 Portable Applications [3 m, 4 GbpsGbps]]
May 2007May 2007 IEEE 802.15IEEE 802.15--07/685r107/685r1
Abbie Mathew, Abbie Mathew, NewLANSNewLANSSlide Slide 2323SubmissionSubmission
AWGNAWGN CM1.2 EnvironmentCM1.2 Environment
NoteNote: No FEC or equalization: No FEC or equalization
Link AnalysisLink AnalysisFixed Application [10 m, 4 Fixed Application [10 m, 4 GbpsGbps]]
Power in antenna (at 1 dB CP) 10.0 dBmTx antenna gain [30º] 14.9 dBiRadiated power 24.9 dBm
Free space loss at 10.0 m 88.1 dBGaseous attenuation 0.2 dBMiscellaneous loss 0.0 dBAttenuation 88.2 dB
Rx antenna gain [30º] 14.9 dBiEffective power into receiver -48.4 dBm
KTB [2000 MHz, 290 K] -81.0 dBmReceiver noise figure 8.0 dBEb/No [ BER 10-6, 95% availability] 11.0 dBFEC gain 0.0 dBJitter 1.0 dBReceiver sensitivity -61.0 dBm
Margin 12.5 dB
Power in antenna (at 1 dB CP) 10.0 dBmTx antenna gain [30º] 14.9 dBiRadiated power 24.9 dBm
Free space loss at 10.0 m 88.1 dBGaseous attenuation 0.2 dBMiscellaneous loss 0.0 dBAttenuation 88.2 dB
Rx antenna gain [30º] 14.9 dBiEffective power into receiver -48.4 dBm
KTB [2000 MHz, 290 K] -81.0 dBmReceiver noise figure 8.0 dBEb/No [ BER 10-6, 95% availability] 15.0 dBFEC gain 0.0 dBJitter 1.0 dBReceiver sensitivity -57.0 dBm
Margin 8.5 dBRequire Require ≥≥ 20 dB margin for AGC to 20 dB margin for AGC to operate to mitigate shadowing effectsoperate to mitigate shadowing effects
May 2007May 2007 IEEE 802.15IEEE 802.15--07/685r107/685r1
Abbie Mathew, Abbie Mathew, NewLANSNewLANSSlide Slide 2424SubmissionSubmission
Increased Antenna GainIncreased Antenna Gain Increased Antenna Gain + FECIncreased Antenna Gain + FEC
NoteNote: No equalization: No equalization
Link Analysis Link Analysis -- ModifiedModifiedFixed [10 m, 4 Fixed [10 m, 4 GbpsGbps]]
Power in antenna (at 1 dB CP) 10.0 dBmTx antenna gain [15º] 21.0 dBiRadiated power 31.0 dBm
Free space loss at 10.0 m 88.1 dBGaseous attenuation 0.2 dBMiscellaneous loss 0.0 dBAttenuation 88.2 dB
Rx antenna gain [15º] 21.0 dBiEffective power into receiver -36.2 dBm
KTB [2000 MHz, 290 K] -81.0 dBmReceiver noise figure 8.0 dBEb/No [ BER 10-6, 95% availability] 15.0 dBFEC gain 0.0 dBJitter 1.0 dBReceiver sensitivity -57.0 dBm
Margin 20.7 dB
Power in antenna (at 1 dB CP) 10.0 dBmTx antenna gain [15º] 21.0 dBiRadiated power 31.0 dBm
Free space loss at 10.0 m 88.1 dBGaseous attenuation 0.2 dBMiscellaneous loss 0.0 dBAttenuation 88.2 dB
Rx antenna gain [15º] 21.0 dBiEffective power into receiver -36.2 dBm
KTB [2000 MHz, 290 K] -81.0 dBmReceiver noise figure 8.0 dBEb/No [ BER 10-6, 95% availability] 15.0 dBFEC gain 4.0 dBJitter 1.0 dBReceiver sensitivity -61.0 dBm
Margin 24.7 dB
May 2007May 2007 IEEE 802.15IEEE 802.15--07/685r107/685r1
Abbie Mathew, Abbie Mathew, NewLANSNewLANSSlide Slide 2525SubmissionSubmission
Base Band Bit PipeBase Band Bit PipeBased on existing prototypes with offBased on existing prototypes with off--thethe--self componentsself componentsNo sharing of functionality between No sharing of functionality between TxTxand Rx band bit pipe modulesand Rx band bit pipe modules130 nm CMOS implementation 130 nm CMOS implementation
60 GHz CMOS60 GHz CMOS100 100 mWmW maximum for 60 GHz output maximum for 60 GHz output power of 5 power of 5 dBmdBm maximummaximum
Estimated Power ConsumptionEstimated Power ConsumptionBlock Diagram & AssumptionsBlock Diagram & Assumptions
Tx Base Band Bit Pipe
60 GHz CMOS transmitter
SP2T Switch
60 GHz CMOS receiver
Rx Base Band Bit Pipe
Serial digital input at 4 Gbps [2 GHz]] 1 to 8 GHz
Antenna60 GHz CMOSModem
Digital Source
Digital Sink
Digital Conditioning
Digital Conditioning
Serial digital output at 4 Gbps [2 GHz]
1 to 8 GHz
■ Parallel to serial interface■ Variable data stream to 4 Gbps■ Equalization■ FEC encoding
Digital Domain
Variable data rate
May 2007May 2007 IEEE 802.15IEEE 802.15--07/685r107/685r1
Abbie Mathew, Abbie Mathew, NewLANSNewLANSSlide Slide 2626SubmissionSubmission
171
100
271
4325
68
Base Band BitPipe
60 GHz CMOSTransceiver
Total
Power, mW
Energy Per Bit, nJ/bit
279
100
379
70
25
95
Base Band BitPipe
60 GHz CMOSTransceiver
Total
Power, mW
Energy Per Bit, nJ/bit
2 Gbps/2 GHz channel 2 Gbps/2 GHz channel –– 50% duty cycle50% duty cycleAll active components in modulator sleepsAll active components in modulator sleepsOnly Only slicerslicer in demodulator sleepsin demodulator sleeps60 GHz transceiver at 100% duty cycle60 GHz transceiver at 100% duty cycle
4 Gbps/2 GHz channel 4 Gbps/2 GHz channel –– 100% duty cycle100% duty cycle
Case ACase A Case BCase B
Estimated Power ConsumptionEstimated Power Consumption
May 2007May 2007 IEEE 802.15IEEE 802.15--07/685r107/685r1
Abbie Mathew, Abbie Mathew, NewLANSNewLANSSlide Slide 2727SubmissionSubmission
OutOut--ofof--thethe--box design optimized for high data box design optimized for high data rate, low power consumption, flexibility, fast rate, low power consumption, flexibility, fast clock recovery and AGCclock recovery and AGC
Flexibility in designFlexibility in design•• Current design based on analog signal processingCurrent design based on analog signal processing
•• Incorporate Incorporate DACsDACs and and DSPsDSPs when they maturewhen they mature
Proven hardware implementationProven hardware implementation
ConclusionConclusion