Downlink network-coded multiple access with diverse power

IF 7.5 2区计算机科学 Q1 TELECOMMUNICATIONS

Digital Communications and Networks Pub Date : 2024-08-01 DOI:10.1016/j.dcan.2022.10.027

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引用次数: 0

Abstract

Normally, in the downlink Network-Coded Multiple Access (NCMA) system, the same power is allocated to different users. However, equal power allocation is unsuitable for some scenarios, such as when user devices have different Quality of Service (QoS) requirements. Hence, we study the power allocation in the downlink NCMA system in this paper, and propose a downlink Network-Coded Multiple Access with Diverse Power (NCMA-DP), wherein different amounts of power are allocated to different users. In terms of the Bit Error Rate (BER) of the multi-user decoder, and the number of packets required to correctly decode the message, the performance of the user with more allocated power is greatly improved compared to the Conventional NCMA (NCMA-C). Meanwhile, the performance of the user with less allocated power is still much better than NCMA-C. Furthermore, the overall throughput of NCMA-DP is greatly improved compared to that of NCMA-C. The simulation results demonstrate the remarkable performance of the proposed NCMA-DP.

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不同功率的下行网络编码多址接入

通常情况下，在下行链路网络编码多址（NCMA）系统中，不同用户的功率是相同的。然而，在某些情况下，例如用户设备有不同的服务质量（QoS）要求时，相同的功率分配并不合适。因此，我们在本文中研究了下行链路 NCMA 系统中的功率分配问题，并提出了下行链路网络编码多路接入（NCMA-DP），其中为不同用户分配了不同的功率。就多用户解码器的误码率（BER）和正确解码信息所需的数据包数量而言，与传统 NCMA（NCMA-C）相比，分配了更多功率的用户的性能大大提高。同时，功率分配较少的用户的性能仍比 NCMA-C 好得多。此外，与 NCMA-C 相比，NCMA-DP 的总体吞吐量也大大提高。仿真结果证明了所提出的 NCMA-DP 的卓越性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Digital Communications and Networks Computer Science-Hardware and Architecture

CiteScore

12.80

自引率

5.10%

发文量

915

审稿时长

30 weeks

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