频率选择性衰落下时空编码分形调制的性能分析

2006 IFIP International Conference on Wireless and Optical Communications Networks Pub Date : 2006-08-07 DOI:10.1109/WOCN.2006.1666609

S. Sengar, S. Joshi, S. Prasad

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引用次数: 1

摘要

研究了在存在频率选择性衰落信道的情况下，将正交空时分组码(OSTBC)与分形调制相结合的方法。L尺度分形调制和相干解调有效地将每个信息符号的选频信道转换为L个具有随机尺度增益的平坦衰落信道。对该方案进行了误码性能分析。结果表明，可以实现mTmRL的一个分集顺序。与OFDM相比，分集顺序的增加是以较低的频谱效率为代价的。收发器的复杂性与OFDM中使用的IFFT/FFT操作相当

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Performance analysis of space time coded fractal modulation in the presence of frequency selective fading

The use of orthogonal space time block codes (OSTBC) in conjunction with fractal modulation in the presence of frequency selective fading channels is considered. An L scale fractal modulation and coherent demodulation effectively converts the frequency selective channel into L flat fading channels per information symbol with random scale gains. The bit error performance analysis of the proposed scheme has been done. It has been shown that a diversity order of mTmRL can be achieved. This increase in diversity order in comparison with that achieved for the OFDM case is at a cost of lower spectral efficiency. The transceiver complexity is comparable with the IFFT/FFT operations used in case of OFDM

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2006 IFIP International Conference on Wireless and Optical Communications Networks

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