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Precoding Aided Generalized Spatial Modulation With an Iterative Greedy Algorithm
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DOI：10.1109/ACCESS.2018.2880844.png)
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摘要
En 中文
This paper divides antennas at the transmitter into several transmit antenna groups (TAGs) and extends the generalized spatial modulation (GSM) idea to a new precoding-aided multiple-input multiple-output system, which is referred to as precoding-aided GSM (PGSM) system. To mitigate the influence caused by correlated channels, we consider the interleaved grouping scheme which leads to a minimum antenna correlation within the same TAG. To select the receive antenna subset with low complexity, we propose an iterative greedy (IG) algorithm that contributes to a maximum equivalent channel gain with low-computational complexity. To reduce the complexity of maximum likelihood (ML) detector, a low complexity IG algorithm-based ML (IG-ML) detector is also derived. Simulation results show that the bit error rate (BER) performance gain up to 3.5 dB is obtained by the proposed PGSM with IG-ML detector over the PGSM with an ordered block minimum mean-squared error detector at a given BER of 10(-4). It is also shown that the proposed PGSM with the IG-ML detector achieves a similar BER performance in a high signal-to-noise power ratio region compared with that of an ideal precoding for the GSM with an optimal ML detector.
Keyword:
Transmit antenna groups (TAGs)
precoding aided GSM (PGSM)
iterative greedy (IG) algorithm
maximum likelihood (ML)
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期刊
IF:
3.6
论文数:
9.8W
被引数:
29.4W
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引用论文
Space-Time Multiple-Mode Orthogonal Frequency Division Multiplexing With Index Modulation.png)
IEEE ACCESSOAAI
IEEE ACCESSIF3.6
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