Name
Abstract | ||
|---|---|---|
Addressing orthogonal frequency division multiplexing (OFDM) transmissions over frequency-selective Rayleigh fading channels, we propose a differential space-time-frequency (DSTF) coding scheme with maximum multipath diversity. Resorting to subcarrier grouping, we convert the system into a set of parallel DSTF systems, within which DSTF coding is considered. Through pairwise error probability (PEP) analysis, we prove that full diversity gain, which is the product of the number of transmit antennas, receive antennas, and the multipath channel length, can be achieved without channel state information (CSI) at the receiver. We analyze the performance of group DSTF coding over correlated fading channels and establish the design criteria for subcarrier selection and code selection. In addition to applying existing differential unitary diagonal codes, we propose a systematic approach to designing nondiagonal codes for DSTF systems, which are block diagonal (BD) and have the necessary unitary and full diversity properties. Based on permutation techniques, we have devised new excellent-performing BD DSTF codes, which significantly improve the coding gain as compared to their diagonal counterparts. Corroborating simulations confirm the merits of our approach. |
Year | DOI | Venue |
|---|---|---|
2005 | 10.1109/TWC.2005.853973 | IEEE Transactions on Wireless Communications |
Keywords | Field | DocType |
multipath channel,modulation coding,diversity reception,transmit antennas,transmitting antennas,differential space-time-frequency,correlated fading channels,new excellent-performing bd dstf,coding scheme,receiving antennas,maximum multipath diversity,ofdm modulation,orthogonal frequency division multiplexing,frequency-selective rayleigh fading channels,dstf coding,channel coding,orthogonal frequency division multiplexing (ofdm),diagonal counterpart,existing differential unitary diagonal,multipath channels,antenna arrays,block codes,differential space–time–frequency coding,block diagonal codes,coding gain,receive antennas,block diagonal,diversity techniques,pairwise error probability,group dstf,space-time codes,error statistics,differential unitary diagonal codes,dstf system,rayleigh channels,space–time coding,parallel dstf system,differential space-time-frequency coded ofdm,channel state information,space time code | Diversity gain,Space–time code,Pairwise error probability,Coding gain,Telecommunications,Fading,Block code,Algorithm,Real-time computing,Mathematics,Orthogonal frequency-division multiplexing,Channel state information | Journal |
Volume | Issue | ISSN |
4 | 5 | 1536-1276 |
Citations | PageRank | References |
11 | 0.60 | 15 |
Authors | ||
3 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Qian Ma | 1 | 20 | 1.30 |
| C. Tepedelenlioglu | 2 | 506 | 41.38 |
| Zhiqiang Liu | 3 | 12 | 4.68 |