21 july, 2005 doc.: ieee 802.15-05-0458-00-004a project: ieee … · 2011. 7. 13. · 21 july, 2005...
TRANSCRIPT
21 July, 2005
Kyung-Kuk Lee (Orthotron Co. Ltd.)Slide 1
doc.: IEEE 802.15-05-0458-00-004a
Submission
Project: IEEE P802.15 Working Group for Wireless Personal Area NProject: IEEE P802.15 Working Group for Wireless Personal Area Networks (etworks (WPANsWPANs))
Submission Title: [UWB-Chirp]Date Submitted: [21 July, 2005]Source: [Kyung-Kuk Lee] Company [Orthotron Co., Ltd.]Address [709 Kranz Techono, 5442-1 Sangdaewon-dong, Jungwon-gu, Sungnam-si, Kyungki-do, Korea 462-120]Voice:[82-31-777-8198], FAX: [82-31-777-8199], E-Mail:[[email protected]]Re: []
Abstract: [Time-Frequency Distribution of UWB-Chirp]
Purpose: [Contribution]Notice: This document has been prepared to assist the IEEE P802.15. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein.Release: The contributor acknowledges and accepts that this contribution becomes the property of IEEE and may be made publicly available by P802.15.
21 July, 2005
Kyung-Kuk Lee (Orthotron Co. Ltd.)Slide 2
doc.: IEEE 802.15-05-0458-00-004a
Submission
TimeTime--Freq. DistributionFreq. Distributionofof
ChirpChirp--SignalSignal(for optional UWB Chirp-radio)
2005. 7. 21.
Kyung-Kuk [email protected]
21 July, 2005
Kyung-Kuk Lee (Orthotron Co. Ltd.)Slide 3
doc.: IEEE 802.15-05-0458-00-004a
Submission
Chirp vs ImpulseChirp Signal Chirp
t
tCorrelation
Impulse Radio
t
t
Correlation
Properties of ChirpProperties of Chirp--SignalSignal
■ SimilaritiesSpread-Spectrum: BW >> Rb (De-spreading Gain)Impulsive Cross-correlation Pulse-width(Pulse-width of Impulse Train) = (Pulse-width of Cross-Correlation of Chirp) @ Same BWGreat Resolvability of Multi-path
21 July, 2005
Kyung-Kuk Lee (Orthotron Co. Ltd.)Slide 4
doc.: IEEE 802.15-05-0458-00-004a
Submission
■ Co-existence / Interference Mitigation Technique- Orthogonal / Quasi-Orthogonal Signal Set - Ultra-High Processing Gain: UWB-Chirp
■ Interference Susceptibility- Low Cross-Correlation property with Existing Signal
■ Robustness: - Heavy Multi-path Environment: Resolvable in Correlation Domain- SOP: 3 x 2 (Code Division) = 6
■ Low Sensitivity for Component Tolerance- Crystal : ± 40ppm
■ Mobility- Ultra-Wide-Band Chirp: Insensitive for Fading & Doppler Shift- Easy to Maintain of Timing Sync. at the Receiver
Properties of ChirpProperties of Chirp--SignalSignal
21 July, 2005
Kyung-Kuk Lee (Orthotron Co. Ltd.)Slide 5
doc.: IEEE 802.15-05-0458-00-004a
Submission
FCC 05-58 Released: March 11, 2005
Regulatory IssueRegulatory Issue
21 July, 2005
Kyung-Kuk Lee (Orthotron Co. Ltd.)Slide 6
doc.: IEEE 802.15-05-0458-00-004a
Submission
TimeTime--Freq. DistributionFreq. Distribution
F
F
F
Infinite Bandwidth
Wide Bandwidth
Narrow Bandwidth
Impulse
Narrow Pulse
Wide Pulse
21 July, 2005
Kyung-Kuk Lee (Orthotron Co. Ltd.)Slide 7
doc.: IEEE 802.15-05-0458-00-004a
Submission
TimeTime--Freq. DistributionFreq. Distribution
( ) *,2 2
jxW t f x t x t e dωττ τ τ
∞ −
−∞
⎛ ⎞ ⎛ ⎞= + −⎜ ⎟ ⎜ ⎟⎝ ⎠ ⎝ ⎠∫
Wigner – Ville Distribution
Special case of Cohen’s Class
( ) ( ) ( ) : j tGeneralized Chirp x t a t e ϕ=
( )22
2 : j t t
Linear Chirp x t eαπ β γ⎛ ⎞+ +⎜ ⎟⎝ ⎠=
( ) ( )22
2
:
j t t
Short Time Linear Chirp
x t e p tαπ β γ⎛ ⎞+ +⎜ ⎟⎝ ⎠
−
=
t
ω
t
ω
- Mono-component : both amplitude and frequency
- Wide-Bandwidth component
21 July, 2005
Kyung-Kuk Lee (Orthotron Co. Ltd.)Slide 8
doc.: IEEE 802.15-05-0458-00-004a
Submission
ω
t
ω
( ),W t f
Single-Chirp Multiple-ChirpTimeTime--Freq. DistributionFreq. Distribution
( ),W t f
Same Chirp Duration
t
21 July, 2005
Kyung-Kuk Lee (Orthotron Co. Ltd.)Slide 9
doc.: IEEE 802.15-05-0458-00-004a
Submission
Single-Chirp Multiple-Chirpω
tTS 2TS 3TS 4TSt
ω
TS 2TS 3TS 4TS
TimeTime--Freq. DistributionFreq. Distribution
21 July, 2005
Kyung-Kuk Lee (Orthotron Co. Ltd.)Slide 10
doc.: IEEE 802.15-05-0458-00-004a
Submission
TimeTime--Freq. DistributionFreq. DistributionMultiple-ChirpMultiple-Sine
t
ω
TS 2TS 3TS 4TSt
ω
TS 2TS 3TS 4TS
21 July, 2005
Kyung-Kuk Lee (Orthotron Co. Ltd.)Slide 11
doc.: IEEE 802.15-05-0458-00-004a
Submission
-4 -3 -2 -1 0 1 2 3 40
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1Auto-Correlation Power at Full-Chirp Scale for Full-Chirp
-4 -3 -2 -1 0 1 2 3 40
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1Auto-Correlation Power at Full-Chirp Scale for OCDM
Auto-Correlation Property
M=16M=1
Correlation PropertyCorrelation PropertySingle-Chirp Multiple-Chirp
21 July, 2005
Kyung-Kuk Lee (Orthotron Co. Ltd.)Slide 12
doc.: IEEE 802.15-05-0458-00-004a
Submission
- 0 . 2 5 - 0 . 2 - 0 . 1 5 - 0 . 1 - 0 . 0 5 0 0 . 0 5 0 . 1 0 . 1 5 0 . 2 0 . 2 50
0 . 1
0 . 2
0 . 3
0 . 4
0 . 5
0 . 6
0 . 7
0 . 8
0 . 9
1A u t o - C o r r e l a t i o n P o w e r a t S u b - C h i r p S c a l e f o r O C D M
- 6 - 4 - 2 0 2 4 6
x 1 0 - 3
0
0 . 1
0 . 2
0 . 3
0 . 4
0 . 5
0 . 6
0 . 7
0 . 8
0 . 9
1A u t o - C o r r e l a t i o n P o w e r a t S u b - C h i r p S c a l e f o r O C D M
M=16BW: 512MHzTchirp: 250nsec
M=16BW: 512MHzTchirp: 250nsec
Correlation PropertyCorrelation Property
21 July, 2005
Kyung-Kuk Lee (Orthotron Co. Ltd.)Slide 13
doc.: IEEE 802.15-05-0458-00-004a
Submission
- 2 - 1 . 9 5 - 1 . 9 - 1 . 8 5 - 1 . 8- 1
- 0 . 8
- 0 . 6
- 0 . 4
- 0 . 2
0
0 . 2
0 . 4
0 . 6
0 . 8
1
- 1 . 7 5 - 1 . 7 - 1 . 6 5 - 1 . 6 - 1 . 5 5- 1
- 0 . 8
- 0 . 6
- 0 . 4
- 0 . 2
0
0 . 2
0 . 4
0 . 6
0 . 8
1
- 1 . 5 - 1 . 4 5 - 1 . 4 - 1 . 3 5 - 1 . 3- 1
- 0 . 8
- 0 . 6
- 0 . 4
- 0 . 2
0
0 . 2
0 . 4
0 . 6
0 . 8
1
- 1 . 2 5 - 1 . 2 - 1 . 1 5 - 1 . 1 - 1 . 0 5 - 1- 1
- 0 . 8
- 0 . 6
- 0 . 4
- 0 . 2
0
0 . 2
0 . 4
0 . 6
0 . 8
1
- 1 - 0 . 9 5 - 0 . 9 - 0 . 8 5 - 0 . 8- 1
- 0 . 8
- 0 . 6
- 0 . 4
- 0 . 2
0
0 . 2
0 . 4
0 . 6
0 . 8
1
- 0 . 7 5 - 0 . 7 - 0 . 6 5 - 0 . 6 - 0 . 5 5 - 0 . 5- 1
- 0 . 8
- 0 . 6
- 0 . 4
- 0 . 2
0
0 . 2
0 . 4
0 . 6
0 . 8
1
- 0 . 2 5 - 0 . 2 - 0 . 1 5 - 0 . 1 - 0 . 0 5 0- 1
- 0 . 8
- 0 . 6
- 0 . 4
- 0 . 2
0
0 . 2
0 . 4
0 . 6
0 . 8
1
0 0 . 0 5 0 . 1 0 . 1 5 0 . 2 0 . 2 5- 1
- 0 . 8
- 0 . 6
- 0 . 4
- 0 . 2
0
0 . 2
0 . 4
0 . 6
0 . 8
1
0 . 2 5 0 . 3 0 . 3 5 0 . 4 0 . 4 5- 1
- 0 . 8
- 0 . 6
- 0 . 4
- 0 . 2
0
0 . 2
0 . 4
0 . 6
0 . 8
1
0 . 7 5 0 . 8 0 . 8 5 0 . 9 0 . 9 5 1- 1
- 0 . 8
- 0 . 6
- 0 . 4
- 0 . 2
0
0 . 2
0 . 4
0 . 6
0 . 8
1
0 . 5 0 . 5 5 0 . 6 0 . 6 5 0 . 7 0 . 7 5- 1
- 0 . 8
- 0 . 6
- 0 . 4
- 0 . 2
0
0 . 2
0 . 4
0 . 6
0 . 8
1
1 1 . 0 5 1 . 1 1 . 1 5 1 . 2 1 . 2 5- 1
- 0 . 8
- 0 . 6
- 0 . 4
- 0 . 2
0
0 . 2
0 . 4
0 . 6
0 . 8
1
1 . 2 5 1 . 3 1 . 3 5 1 . 4 1 . 4 5 1 . 5- 1
- 0 . 8
- 0 . 6
- 0 . 4
- 0 . 2
0
0 . 2
0 . 4
0 . 6
0 . 8
1
1 . 5 1 . 5 5 1 . 6 1 . 6 5 1 . 7 1 . 7 5- 1
- 0 . 8
- 0 . 6
- 0 . 4
- 0 . 2
0
0 . 2
0 . 4
0 . 6
0 . 8
1
1 . 7 5 1 . 8 1 . 8 5 1 . 9 1 . 9 5 2- 1
- 0 . 8
- 0 . 6
- 0 . 4
- 0 . 2
0
0 . 2
0 . 4
0 . 6
0 . 8
1
0 0.05 0.1 0.15 0.2 0.25-20
-15
-10
-5
0
5
10
15
20
∑
Temporal PAPR : 21.5• Tchirp = 250nsec• Roll-off factor = 0.25
M=16BW: 512MHz
Temporal PAPRTemporal PAPR
21 July, 2005
Kyung-Kuk Lee (Orthotron Co. Ltd.)Slide 14
doc.: IEEE 802.15-05-0458-00-004a
Submission
-5 -4 -3 -2 -1 0 1 2 3 4 5
x 108
-50
-45
-40
-35
-30
-25
-20
-15
-10
-5
0Frequency Response for OCDM
512MHz
Power Spectral DensityPower Spectral Density
21 July, 2005
Kyung-Kuk Lee (Orthotron Co. Ltd.)Slide 15
doc.: IEEE 802.15-05-0458-00-004a
Submission
-3 -2 -1 0 1 2 3
x 108
-10
-9
-8
-7
-6
-5
-4
-3
-2
-1
0Frequency Respons e for OCDM
Spectral PAPR < 1.5 dB
512MHz
Spectral PAPRSpectral PAPR
21 July, 2005
Kyung-Kuk Lee (Orthotron Co. Ltd.)Slide 16
doc.: IEEE 802.15-05-0458-00-004a
Submission
Parameter UWB UWB
peak payload bit rate(Rb) 1000 250 kbps
Signal Bandwidth 512 512 MHz
Average Tx Power(Pt) 0.038 0.038 mW
Average Tx Power(Pt) -14.2 -14.2 dBm
Tx antenna gain(Gt) 0 0 dBi
fc' = sqrt(fminfmax) -10dB 4.20 4.20 GHz
Path loss at 1meter(L1=10n*log10(4pifc'/c)) 44.9 44.9 dB
distance 50 50 m
Path loss Exponent (d<=1m) 2 2
Path loss Exponent (d>1m) 2 2
Path loss at d m(L2=10n*log10(d)) 34.0 34.0
Rx antenna gain (Gr) 0 0 dBi
Rx power(Pr = Pt+Gt+Gr-L1-L2(dB)) -93.1 -93.1 dBm
Average noise power per bit -114.0 -120.0 dBm
Rx Noise Figure(Nf) 7 7 dB
Average noise power per bit(Pn=N+Nf) -107.0 -113.0 dBm
Minimum Eb/No(S) 4.7 4.7 dB r=1/2, k=5
Implementation Loss(I) 3 3 dB
Link Margin (M=Pr-Pn-S-I) 6.2 12.2 dB
Proposed Min. Rx Sensitivity Level -99.3 -105.3
Link BudgetLink Budget
21 July, 2005
Kyung-Kuk Lee (Orthotron Co. Ltd.)Slide 17
doc.: IEEE 802.15-05-0458-00-004a
Submission
■ Temporal PAPR- Maximum Available Power @ 1VP-P:
- Maximum Achievable PAPR @ 1VP-P
■ Spectral PAPR < 1.5dB
■ Sub-Chirp Bandwidth: 32MHz (M=16)- (16MHz Base-Band) Low clock-rate DSP, ADC/DAC
■ Robustness- Multi-path- Doppler Shift
( )21 2 2
2.5 [ ]50MAXP mW= =
-41.3/10
2.5 2.5 65.8 > 21.510 512 0.038MAXPAPR = = ≈
×
SummarySummary