Unified Differential Spatial Modulation

作者：Ishikawa Naoki^*; Sugiura Shinya

来源：IEEE Wireless Communications Letters, 2014, 3(4): 337-340.

DOI：10.1109/LWC.2014.2315635

• Differential encoding
• MIMO
• non-coherent detection
• rate-diversity tradeoff
• space-shift keying
• space-time shift keying
• spatial modulation

This letter proposes a unified differential spatial modulation (DSM) architecture, where a flexible rate-diversity tradeoff is achieved, while enabling a simple single-RF transmitter structure along with non-coherent detection that dispenses with channel estimation at the receiver. In our proposed scheme, by assigning a set of sparse complex-valued antenna-index matrices, only one transmit antenna element is activated during each symbol interval and then a phase-shift keying (PSK) symbol is transmitted from the activated antenna element. The explicit benefit of the proposed scheme%26apos;s universal DSM framework is ability to strike a balance between previous DSM schemes, such as the symbol-based and the block-based DSM schemes. Moreover, to attain a useful attainable diversity gain, we further extend the proposed DSM scheme in a manner that permits flexible planning of the number of symbols employed per antenna-index block.

• 出版日期2014-8