High-rate Full-diversity Space-Time-Frequency Codes with Partial Interference Cancellation Decoding
In this paper, a simple design of a linear dispersive space-time-frequency (STF) code is proposed with a design criterion to achieve high rate for frequency-selective channels in terms of multipath when the partial interference cancellation (PIC) group decoding is applied at receiver. With an appropriate grouping scheme as well as the PIC group decoding, the proposed STF code is shown to obtain the similar diversity gain as the maximum likelihood (ML) decoding, namely full-dimensional sphere decoding, but have a low decoding complexity. It seems as an intermediate decoding between the ML receiver and zero-forcing (ZF) receiver. The proposed grouping design criterion for the PIC group decoding to achieve full diversity deploying the orthogonal frequency- division multiplexing (OFDM) technique is also an intermediate condition between the loosest ML full rank criterion of codewords and the strongest ZF linear independence condition of the column vectors for the equivalent frequencyselective channel matrix. It can achieves full diversity with the PIC group decoding for any number of subcarriers and the data rate can be made high. Simulation results show that the proposed STF code can well address the rateperformance-complexity tradeoff of the multipleinput multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) communication system.
Space-Time-Frequency Codes orthogonal frequency division multiplexing Full-diversity MIMO
Chengrong Huang Ying Guo Moon Ho Lee
Department of Computer and Engineering Guangxi Economic Trade Polytechnic Nanning 530021, China School of Information Science Engineering Central South university Changsha 410083, China Department of Information Communication Engineering Chonbuk National University Chonju 561-756, Kore
国际会议
杭州
英文
235-240
2012-03-23(万方平台首次上网日期,不代表论文的发表时间)