期刊
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS
卷 19, 期 1, 页码 610-623出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TWC.2019.2947042
关键词
Multiaccess communication; Peak to average power ratio; Frequency-domain analysis; Frequency-selective fading channels; NOMA; Transmitters; Multicarrier; CDMA; sparse spreading; spatial modulation; maximum a posteriori detection; message passing algorithm; performance
资金
- Engineering and Physical Sciences Research Council (EPSRC) [EP/P034284/1, EP/P03456X/1]
- European Research Council's (ERC's) Advance Fellow Award QuantCom
- EPSRC under the Established Career Fellowship [EP/R007101/1]
- Wolfson Foundation
- Royal Society
- EPSRC [EP/P034284/1, EP/P03456X/1, EP/J017655/1, EP/R007101/1, EP/N020391/1] Funding Source: UKRI
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.
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