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首页> 外文期刊>Wireless personal communications: An Internaional Journal >Single-Carrier Single-Block Differential Space-Frequency Coding Transmission Over the Frequency-Selective Fading Channels
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Single-Carrier Single-Block Differential Space-Frequency Coding Transmission Over the Frequency-Selective Fading Channels

机译：选频衰落信道上的单载波单块差分空频编码传输

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摘要

In this paper, a single-carrier single-block differential space-frequency block coding scheme for multiple input multiple output frequency-selective fading channels is proposed. In the proposed scheme, an alternative constant modulus single-carrier transmission is adopted, which significantly mitigates the sensitivity to the nonlinear distortion while having comparable lower complexity to the orthogonal frequency division multiplexing modulus. Based on this, subgrouping the signal transmit matrix through the block matrix method and fatherly differential space-frequency complex orthogonal coding on each subblocks, it not only transmits the differentially encoded signal matrix within one symbol block periods regardless of the number of transmit antennas, but also achieves the available spatial and frequency diversities without the requirement of multichannel estimation at the receiver. In the proposed scheme, it is only required that the fading channels keep approximately constant within each subblock during one symbol block transmission period, and thus can be more robust and effective to combat the channel rapidly fading with even lower bit error ratio. Theoretical analysis and corroborating simulation under various channel conditions shows that, our proposed scheme yields superior performance to previously proposed differential schemes.
机译：提出了一种用于多输入多输出选频衰落信道的单载波单块差分空频块编码方案。在提出的方案中，采用了替代的恒定模量单载波传输，这大大减轻了对非线性失真的敏感性，同时具有与正交频分复用模数相当的较低复杂度。在此基础上，通过块矩阵方法对信号发射矩阵进行分组，并对每个子块进行父空间差分空频复正交编码，不仅在一个符号块周期内发射差分编码信号矩阵，与发射天线数量无关，而且无需在接收机处进行多信道估计，也可以实现可用的空间和频率分集。在提出的方案中，仅要求衰落信道在一个符号块传输周期内在每个子块内保持近似恒定，因此可以更加鲁棒和有效地抵抗信道甚至以更低的误码率快速衰落。在各种信道条件下的理论分析和验证仿真表明，我们提出的方案比以前提出的差分方案具有更好的性能。

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