Spatial Modulated Multicarrier Sparse Code-Division Multiple Access
Spatial Modulated Multicarrier Sparse Code-Division Multiple Access
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DOI：
10.1109/twc.2019.2947042
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发表时间：
2020-01
影响因子：
10.4
通讯作者：
Yusha Liu;Lie-liang Yang;P. Xiao;H. Haas;L. Hanzo
中科院分区：
文献类型：
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作者：
Yusha Liu;Lie-liang Yang;P. Xiao;H. Haas;L. Hanzo
本文提出了一种新的空间调制多载波稀疏码分多址（SM/MC-SCDMA）系统，以实现大规模的连接在以设备为中心的无线通信。在我们的SM/MC-SCDMA系统中，MC信令和SM的优点被合并以构思低复杂度的收发器。稀疏频域扩展被用来减轻峰均功率比（PAPR）的MC信令，以及促进低复杂度检测使用的消息传递算法。然后，我们分析了SM/MC-SCDMA系统在频率选择性衰落信道下的单用户误比特率性能。此外，SM/MC-SCDMA系统的性能进行评估的基础上的蒙特-卡罗模拟和分析结果。我们证明，我们的低复杂度SM/MC-SCDMA收发器能够实现近最大似然（ML）的性能，即使当归一化的用户负载高达2，从而构成一个可变的解决方案，以支持在以设备为中心的无线系统中的大规模连接。
This paper proposes a novel spatial-modulated multicarrier sparse code-division multiple access (SM/MC-SCDMA) system for achieving massive connectivity in device-centric wireless communications. In our SM/MC-SCDMA system, the advantages of both MC signalling and SM are amalgamated to conceive a low-complexity transceiver. Sparse frequency-domain spreading is utilized to mitigate the peak-to-average power ratio (PAPR) of MC signalling, as well as to facilitate low-complexity detection using the message passing algorithm. We then analyze the single-user bit error rate performance of SM/MC-SCDMA systems communicating over frequency-selective fading channels. Furthermore, the performance of SM/MC-SCDMA systems is evaluated based on both Monte-Carlo simulations and analytical results. We demonstrate that our low-complexity SM/MC-SCDMA transceivers are capable of achieving near-maximum likelihood (ML) performance even when the normalized user-load is as high as two, hence constituting a variable solution to support massive connectivity in device-centric wireless systems.