Design of A Convergence-Aware Based Expectation Propagation Algorithm for Uplink Mimo Scma Systems

Jih Yang Lin, Pei Yun Tsai

研究成果: 書貢獻/報告類型會議論文篇章同行評審

摘要

Sparse code multiple access (SCMA) uses multidimensional sparse codewords to transmit user data. The expectation propagation algorithm (EPA) exploiting the sparse property shows linear complexity growth and thus is preferred for multi-user detection. To further reduce the complexity, a convergence-aware based EPA for uplink MIMO SCMA systems is proposed. Techniques including user termination, antenna termination, and codebook reduction are adopted. The user termination must be combined with the iteration constraint to avoid misjudgement. The antenna termination can stop the computations related with certain antennas having strong channel gains. Only possible codewords are considered in the reduced codebook to eliminate unnecessary calculation for posterior probability. From simulation results, we show that these three techniques can strike a balance between performance and complexity and more than 50% complexity can be saved.

原文???core.languages.en_GB???
主出版物標題2020 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2020 - Proceedings
發行者Institute of Electrical and Electronics Engineers Inc.
頁面1698-1702
頁數5
ISBN(電子)9781509066315
DOIs
出版狀態已出版 - 5月 2020
事件2020 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2020 - Barcelona, Spain
持續時間: 4 5月 20208 5月 2020

出版系列

名字ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
2020-May
ISSN(列印)1520-6149

???event.eventtypes.event.conference???

???event.eventtypes.event.conference???2020 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2020
國家/地區Spain
城市Barcelona
期間4/05/208/05/20

指紋

深入研究「Design of A Convergence-Aware Based Expectation Propagation Algorithm for Uplink Mimo Scma Systems」主題。共同形成了獨特的指紋。

引用此