论文标题
室内VLC中多次访问频道和广播频道的NOMA
NOMA for Multiple Access Channel and Broadcast Channel in Indoor VLC
论文作者
论文摘要
正交频施加多重多路复用（OFDM）非正交多重访问（NOMA）的复杂性提高，并且由于非（非（非（VLC）））NOMA的光谱效率降低，而由于非（非（NAMA）的射频NOMA，因此由于发射符号上的非阴性真实值约束而引起的射频NOMA。为了解决这个问题，我们为室内VLC的两种情况提出了一个普遍的非OFFM计划； i）多访问通道（MAC），ii）广播频道（BC）。我们使用基于连续的干扰取消（SIC）解码，关节最大似然（JML）解码以及SIC和JML解码的组合来评估MAC提出的方案的性能。对于BC，我们使用基于SIC的解码来评估性能。可以观察到，对于MAC，根据位错误率（BER）和计算，具有JML解码的提出的JML解码方案的性能优于最新的正交多访问。对于卑诗省，随着BER的权衡，该建议的计划在计算上是有效的。
Orthogonal frequency division multiplexing (OFDM) based non-orthogonal multiple access (NOMA) has increased complexity and reduced spectral efficiency in visible light communications (VLC) NOMA compared to radiofrequency NOMA due to non-negative real value constraints on transmit symbols. To address this issue, we propose a generalized non-OFDM based scheme for two scenarios of indoor VLC; i) Multiple access channel (MAC), ii) Broadcast channel (BC). We evaluate the performance of the proposed scheme for MAC using successive interference cancellation (SIC) based decoding, joint maximum likelihood (JML) decoding, and a combination of SIC and JML decoding. For BC, we evaluate the performance using SIC based decoding. It is observed that, for MAC, the proposed scheme with JML decoding performs better than the state-of-the-art orthogonal multiple access both in terms of bit error rate (BER) and computations. For BC, the proposed scheme is computationally efficient with trade-off on BER.
