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2008
IEEE

Three-Stage Serially Concatenated Codes and Iterative Center-Shifting K-Best Sphere Detection for SDM-OFDM: An EXIT Chart Aided

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Three-Stage Serially Concatenated Codes and Iterative Center-Shifting K-Best Sphere Detection for SDM-OFDM: An EXIT Chart Aided
—Iterative K-best sphere detection (SD) and channel decoding is appealing, since it is capable of achieving a nearmaximum-a-posteriori (MAP) performance at a low complexity. However, a potentially excessive computational cost is imposed, especially in a high-throughput Spatial Division Multiplexing (SDM) aided OFDM system emloying a large number of transmit antennas and/or high-order modulation schemes. This problem is further aggravated, when the number of transmit antennas exceeds that of the receive antennas, namely in the challanging scenario of rank-deficient systems. In order to further reduce the complexity imposed, we propose a unity-rate-code-aided (URC) three-stage concantenated transceiver constituted by an inner and outer channel encoder/decoder pair as well as the SDM aided OFDM transmitter and K-best SD. We have demonstrated that our proposed three-stage scheme is capable of achieving a substantial performance gain over the classic two-stage scheme. For example, given ...
Li Wang, Lei Xu, Sheng Chen, Lajos Hanzo
Added 01 Jun 2010
Updated 01 Jun 2010
Type Conference
Year 2008
Where WCNC
Authors Li Wang, Lei Xu, Sheng Chen, Lajos Hanzo
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