高技术通讯（英文版）2007，Vol.13Issue(3)：312-316,5.
Rate-embedded differential space-time-frequency coding scheme
Rate-embedded differential space-time-frequency coding scheme
摘要
Abstract
In multiple-input-multiple-output orthogonal-frequency-division-multiplexing (MIMO-OFDM) system, a rate-embedded differential space-time-frequency (DSTF) coding scheme was proposed. Both the conventional space-time codes and coding techniques in frequency domain were employed to build high rate and low rate space-time-frequency message matrices. Then both types of message matrices were differentially transmitted alternately in the frequency domain. Consequently, the total transmission rate could be improved greatly. At receiver, a simple decision feedback differential detector (SDF-DD) was adopted to further enhance the total error performance with approximate DD complexity. Simulation results verified that the proposed scheme can implement high rate and high reliability differential transmission. Compared with the conventional DSTF coding schemes, the proposed scheme achieves higher spectral efficiency and much better error performance.关键词
multiple-input-multiple-output ( MIMO ), orthogonal-frequency-division-multiplexing(OFDM), differential space-time-frequency (DSTF), rate-embedded, spectral efficiencyKey words
multiple-input-multiple-output ( MIMO ), orthogonal-frequency-division-multiplexing(OFDM), differential space-time-frequency (DSTF), rate-embedded, spectral efficiency分类
信息技术与安全科学引用本文复制引用
..Rate-embedded differential space-time-frequency coding scheme[J].高技术通讯（英文版）,2007,13(3):312-316,5.基金项目
Supported by the High Technology Research and Development Programme of China (No.003AA12331007) and the National Natural Science Foundation of China (No. 60332030, 60572157). （No.003AA12331007）
