Space shift keying (SSK) is a single radio frequency (RF) chain multiple-input multiple-output (MIMO) scheme which uses the indices of transmit antennas for information transmission. Time successive SSK-M-ary modulation (TSSM) is a second order transmit diversity scheme based on single RF chain multiple antenna transmitter. In this letter, TSSM based on selection combining (TSSM-SC) is conceived to realize a single RF chain receiver for TSSM without compromise on the diversity order. The metric of receiver antenna selection is proposed for TSSM-SC. A novel approach is given to find a tight upper bound on the bit error rate (BER) of TSSM-SC in simple closed form. Further, the diversity order of TSSM-SC is analyzed with asymptotic expression. Simulation results that validate the analyses are given to show the diversity gain at reduced receiver complexity. The performance of TSSM-SC is compared with other schemes with selection combining to highlight its performance advantage.

中文翻译：

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时间连续SSK-M-ary调制结合接收机性能的选择分析

空间移位键控 (SSK) 是一种单射频 (RF) 链多输入多输出 (MIMO) 方案，它使用发射天线的索引进行信息传输。时间连续 SSK-M 进制调制 (TSSM) 是一种基于单射频链多天线发射机的二阶发射分集方案。在这封信中，基于选择组合的 TSSM (TSSM-SC) 旨在实现用于 TSSM 的单个 RF 链接收器，而不会影响分集阶数。为 TSSM-SC 提出了接收机天线选择的度量。给出了一种新颖的方法来以简单的封闭形式找到 TSSM-SC 的误码率 (BER) 的严格上限。此外，TSSM-SC 的多样性顺序是用渐近表达式分析的。给出了验证分析的仿真结果，以显示在降低接收器复杂度的情况下的分集增益。将TSSM-SC的性能与其他方案进行比较，选择结合，突出其性能优势。