overview of space time coding 5

... 41 59 Telatar, I E (1999) Capacity of multi-antenna Gaussian channels European Transactions on Telecommunications, 10(6), 58 5 59 5 Tarokh, V., Seshadri, N., & Calderbank, A R (1998) Space time ... Theory, 49(10), 24 15 24 25 10 Jing, Y., & Hassibi, B (2006) Distributed space time coding in wireless relay networks IEEE Transactions on Wireless Communication, 5( 12), 352 4– 353 6 11 Dohler, M., ... we will derive the upper bound of PEP for any position of relay From (11), the value of γ can be shown as 123 Pairwise Error Probability of Distributed Space Time Coding γ > |h RD |2 |h SR |2 +...

Ngày tải lên: 12/12/2017, 04:50

... Nc Figure 20 Proposed OFDM CDMA (sim.) 2D OFDM CDMA (sim.) Proposed OFDM CDMA (theo.) 2D OFDM CDMA (theo.) 18 16 14 % 12 10 0 Figure 10 15 20 25 30 SINR (dB.) 35 40 45 50 50 64 Users 32 Users ... 45 50 50 64 Users 32 Users 16 Users Users User 45 User 40 35 % 30 25 20 15 10 64 Users 0 10 15 20 25 30 SINR (dB.) Figure 35 40 45 50 100 Proposed OFDM CDMA STF Block codes [16] SER 10−1 10−2 10−3 ... Wang, Space- time- frequency spreading and coding for multi-user MIMO-OFDM systems, in Proc IEEE Int Conf Communications, Beijing, China, May 2008, pp 453 7– 454 2 [11] J Wang, X Wang, Optimal linear spacetime...

Ngày tải lên: 18/06/2014, 22:20

... http://asp.eurasipjournals.com/content/2011/1/139 Page of 13 50 64 Users 32 Users 16 Users Users User 45 User 40 35 % 30 25 20 15 10 64 Users 0 10 15 25 20 30 40 35 45 50 SINR (dB.) Figure Probability density ... Wang, Space- time- frequency spreading and coding for multi-user MIMO-OFDM systems in Proc IEEE Int Conf Communications, Beijing, China, 453 7– 454 2 (May 2008) 11 J Wang, X Wang, Optimal linear spacetime ... user k from antenna i at time n 3) Time- Frequency mapping The output of the space- time spreading is then mapped in time and frequency before IFFT Figure describes the Time- Frequency mapping method...

Ngày tải lên: 20/06/2014, 21:20

... 10−4 10 15 20 25 30 SNR Analysis Simulation Figure 3: Analytical and experimental plots of MSE in the chan2 nel estimates for different values of ROE; σω = (2π/30)2 , (2π /50 )2 , , (2π/ 250 )2 , (2π/1000)2 ... μc 20 Average SIR per channel − μc Pe = − √ M J J −1 25 MSE = −30 dB 10 l 5 ⎞⎞ 2(l−i)+1 ⎠⎠ 15 10 15 SNR 20 25 30 , (21) Figure 4: Plot of average SIR per channel versus SNR for MSE = −30 dB ... AWGN noise, over the decoding of OSTBC data Hence, it presents a comprehensive view of the performance of OSTBC with imperfect knowledge of small carrier offsets (in case of small oscillator drifts...

Ngày tải lên: 22/06/2014, 19:20

... Advances in Signal Processing 0.16 3 .5 0.14 0.12 K = 10 2 .5 K = 30 Pe 0.1 0.08 d K = 30 1 .5 0.06 K = 10 0.04 0 .5 0.02 5 10 15 10 log10 (1/σ ) (dB) 5 10 15 10 log10 (1/σ ) (dB) N =1 N =2 N =4 ... 49, no 10, pp 24 15 24 25, 2003 [14] S Yiu, R Schober, and L Lampe, “Distributed space- time block coding, ” IEEE Transactions on Communications, vol 54 , no 7, pp 11 95 1206, 2006 [ 15] B S Mergen and ... in networks with a large number of nodes since its decoding complexity is independent of the total number of nodes This scheme consists of a code C and a set of signature vectors G The active...

Ngày tải lên: 22/06/2014, 19:20

... vol 16, no 8, pp 1 451 –1 458 , 1998 [4] N Al-Dhahir, “A new high-rate differential space- time block coding scheme,” IEEE Communications Letters, vol 7, no 11, pp 54 0 54 2, 2003 [5] S N Diggavi, N Al-Dhahir, ... Calderbank, Space- time block codes from orthogonal designs,” IEEE Transactions on Information Theory, vol 45, no 5, pp 1 456 –1467, 1999 V Tarokh, H Jafarkhani, and A R Calderbank, Space- time block coding ... Stamoulis, and A R Calderbank, “Differential space- time coding for frequency-selective [17] [18] channels,” IEEE Communications Letters, vol 6, no 6, pp 253 – 255 , 2002 H Jafarkhani and V Tarokh, “Multiple...

Ngày tải lên: 22/06/2014, 22:20

... UNITARY SPACE- TIME CODING The differential encoding and decoding schemes using star QAM method for unitary space- time coding are analyzed in this section The differential unitary space- time coding ... differential unitary space- time coding and differential orthogonal space- time coding, by using the star QAM method, two kinds of multiple amplitudes differential space- time coding schemes are presented ... basis of analyzing differential orthogonal space- time coding (DOSTC) scheme and differential unitary space- time code (DUSTC) scheme, we develop the two multiple-amplitude differential space- time coding...

Ngày tải lên: 22/06/2014, 23:20

... The number P of positive eigenvalues of Rg represents the number of fading effective degrees of freedom of the multipath channel, that is, the number of separable paths.2 In the rest of this paper, ... complexity of 256 branches per coded symbol 5. 2 Some aspects of the TCM-TR-STBC scheme In Figure 3, we evaluate the impact of the number of separable paths on the WER with M = for a spectral efficiency of ... 8/864)RTCM = 1. 056 (bit/chip) This yields 1. 35 Mbps on a single carrier On three carriers (equivalent to the MHz of the European UMTS), we obtain 4. 05 Mbps, well beyond the “dream” target of Mbps of high-speed...

Ngày tải lên: 23/06/2014, 00:20

... 152 153 154 155 156 159 160 161 162 163 xviii 5. 13 5. 14 5. 15 5.16 5. 17 5. 18 5. 19 5. 20 5. 21 5. 22 5. 23 5. 24 5. 25 List of Figures FER performance of QPSK ST turbo TC with variable memory order of ... 133 133 134 134 1 35 136 136 List of Figures 4.19 4.20 4.21 4.22 4.23 4.24 4. 25 4.26 4.27 4.28 4.29 4.30 5. 1 5. 2 5. 3 5. 4 5. 5 5. 6 5. 7 5. 8 5. 9 5. 10 5. 11 5. 12 Performance comparison of the 8-state 8-PSK ... interleaver size of 130 symbols on slow fading channels 163 164 164 1 65 1 65 166 167 168 168 169 169 170 171 List of Figures 5. 26 5. 27 5. 28 5. 29 5. 30 5. 31 5. 32 5. 33 5. 34 5. 35 5.36 5. 37 6.1 6.2...

Ngày tải lên: 14/08/2014, 12:20

... nT = nR = antennas Probability of exceeding abscissa [Prob of capacity/n > abscissa] 0.9 0.8 0.7 λ/2 0.6 λ 0 .5 2λ 0.4 3λ 0.3 4λ 0.2 5 10λ 0.1 0 0 .5 1 .5 2 .5 3 .5 4 .5 Capacity/n (bits/s/Hz) Figure ... elements 0.9 K=−∞ dB Probability of exceeding abscissa [Prob of capacity > abscissa] 0.8 K= dB 0.7 0.6 K=10 dB 0 .5 0.4 K=+∞ dB 0.3 0.2 0.1 10 .5 12 13 .5 15 16 .5 18 19 .5 21 22 .5 24 Capacity (bits/s/Hz) ... Limits of Multiple-Input Multiple-Output Wireless Communication Systems α =30o r α =20o r α =10o r o α =5 r o α =1 0.8 θ (Correlation coefficient) r 0.6 0.4 0.2 −0.2 −0.4 10 15 20 25 30 35 40 45 50...

Ngày tải lên: 14/08/2014, 12:20

... capacity of multiple-input multipleoutput (MIMO) wireless channels is to employ space- time (ST) coding [6] Space- time coding is a coding technique designed for use with multiple transmit antennas Coding ... are various approaches in coding structures, including space- time block codes (STBC), space- time trellis codes (STTC), space- time turbo trellis codes and layered space- time (LST) codes A central ... presentation of the code design criteria on slow and fast Rayleigh fading channels Space- Time Coding Branka Vucetic and Jinhong Yuan c 2003 John Wiley & Sons, Ltd ISBN: 0-470-84 757 -3 50 Space- Time Coding...

Ngày tải lên: 14/08/2014, 12:20

... analysis of space- time codes over Rayleigh fading channels”, Journal of Commun and Networks, vol 2, no 4, pp 351 – 355 , Dec 2000 [43] J K Cavers and P Ho, “Analysis of error performance of trellis ... 4-state space- time coded QPSK with antennas 80 Space- Time Coding Performance Analysis and Code Design 10 Code A Code B Code C n =1 R nR=4 Frame Error Probability 10 10 10 10 15 20 25 30 35 SNR ... 10 −4 10 5 10 −10 −8 −6 −4 −2 Es/No (dB) 10 Figure 2. 15 Pairwise error probability of the 4-state QPSK space- time trellis code with two transmit and two receive antennas 86 Space- Time Coding Performance...

Ngày tải lên: 14/08/2014, 12:20

... to be 0. 25, 0 .5, 0. 75 and It can be observed that the code performance 114 Space- Time Block Codes 10 cor=0 cor=0. 25 cor=0 .5 cor=0. 75 cor=1 −1 Frame Error Rate 10 −2 10 −3 10 10 15 20 25 SNR (dB) ... Calderbank, Space- time block codes from orthogonal designs”, IEEE Trans Inform Theory, vol 45, no 5, pp 1 456 –1467, July 1999 [4] V Tarokh, H Jafarkhani and A R Calderbank, Space- time block coding ... , nT (4 .5) k=1 j =0 These outputs are elements of an M-PSK signal set Modulated signals form the space- time symbol transmitted at time t xt = (xt1 , xt2 , , xtnT )T (4.6) The space- time trellis...

Ngày tải lên: 14/08/2014, 12:20

... Calderbank, Space- time block codes from orthogonal designs”, IEEE Trans Inform Theory, vol 45, no 5, July 1999, 1 456 –1467 [9] J Grimm, M P Fitz and J V Krogmeier, “Further results in space- time coding ... interleaving/deinterleaving of information sequences in the encoder/decoder In this chapter we consider construction of space- time coding techniques which combine the coding gain benefits of turbo coding with ... simulation results Space- Time Coding Branka Vucetic and Jinhong Yuan c 2003 John Wiley & Sons, Ltd ISBN: 0-470-84 757 -3 150 Space- Time Turbo Trellis Codes 5. 1.1 Construction of Recursive STTC In this...

Ngày tải lên: 14/08/2014, 12:20

... representation of the forward recursion is given in Fig 5. 36 (5. 53) 182 Space- Time Turbo Trellis Codes αt−1 (l ) l γt0 (l , l) αt (l) l γt1 (l , l) αt−1 (l ) l Figure 5. 36 Graphical representation of the ... “Performance of space- time coding on fading channels”, Proc of Intl Symposium on Inform Theory (ISIT) 2001, Washington D.C, June 2001 [13] L R Bahl, J Cocke, F Jelinek and J Raviv, “Optimal decoding of ... 1999, pp 58 5 59 5 [17] D Divsalar, S Dolinar and F Pollara, “Low complexity turbo-like codes”, Proc of 2nd Int’l Symp on Turbo Codes and Related Topics, Brest, 2000, pp 73–80 184 Space- Time Turbo...

Ngày tải lên: 14/08/2014, 12:20

... pp 311–3 35 Bibliography 221 [34] E Telatar, “Capacity of multi-antenna Gaussian channels”, The European Transactions on Telecommunications, vol 10, no 6, Nov./Dec 1999, pp 58 5 59 5 [ 35] G Foschini, ... March 2001 222 Layered Space- Time Codes [51 ] K Lo, S Marinkovic, Z Chen and B Vucetic, “Performance comparison of layered space time codes”, ICC 2002, May 2002, New York, USA [52 ] K Lo, Z Chen, P ... information at the receiver Differential space- time modulation based on group codes [9] and unitary -space- time block codes [10] are also discussed Space- Time Coding Branka Vucetic and Jinhong Yuan...

Ngày tải lên: 14/08/2014, 12:20

... of KHz The OFDM frame length is 1 25 µ s, and a guard time of 31. 25 µ s is introduced for each OFDM frame  255 Performance Analysis of STC-OFDM Systems MIMO MIMO MIMO MIMO flat fading OFDM−1 OFDM−2a ... An OFDM system employing FFT 252 Space- Time Coding for Wideband Systems Figure 8.3 An STC-OFDM system block diagram At each time t, a block of information bits is encoded to generate a space- time ... performance of space- time codes on wideband wireless channels with frequency-selective fading Various space- time coding schemes are investigated in wideband OFDM and CDMA systems 8.2 Performance of Space- Time...

Ngày tải lên: 14/08/2014, 12:20

... 82 diversity, 54 angle, 55 antenna, 55 frequency, 54 multidimensional, 55 Index polarization, 55 receive , 55 space, 55 techniques, 54 time, 54 transmit, 55 diversity combining, 55 equal gain ... PIC-STD, 197, 290 space- time matched filter receiver, 277 space- time MMSE receiver, 278 space- time spreading (STS), 269 space- time symbol, 64, 118 space- time symbol difference, 72 space- time symbol-wise ... chart, 158 fade rate, 50 fading, 50 fading channel, 50 , 51 block, 13 correlated, 52 ergodic, 254 fast, 13, 64 frequency dispersion, 50 frequency flat, 51 299 Index frequency nonselective, 51 frequency...

Ngày tải lên: 14/08/2014, 12:20

... 152 153 154 155 156 159 160 161 162 163 xviii 5. 13 5. 14 5. 15 5.16 5. 17 5. 18 5. 19 5. 20 5. 21 5. 22 5. 23 5. 24 5. 25 List of Figures FER performance of QPSK ST turbo TC with variable memory order of ... 133 133 134 134 1 35 136 136 List of Figures 4.19 4.20 4.21 4.22 4.23 4.24 4. 25 4.26 4.27 4.28 4.29 4.30 5. 1 5. 2 5. 3 5. 4 5. 5 5. 6 5. 7 5. 8 5. 9 5. 10 5. 11 5. 12 Performance comparison of the 8-state 8-PSK ... interleaver size of 130 symbols on slow fading channels 163 164 164 1 65 1 65 166 167 168 168 169 169 170 171 List of Figures 5. 26 5. 27 5. 28 5. 29 5. 30 5. 31 5. 32 5. 33 5. 34 5. 35 5.36 5. 37 6.1 6.2...

Ngày tải lên: 26/10/2014, 14:30