Optimized Uplink Spectrum Access With Adaptive Interference-Aware User Admission

IF 4.5 3区计算机科学 Q2 TELECOMMUNICATIONS

IEEE Communications Letters Pub Date : 2026-01-28 DOI:10.1109/LCOMM.2026.3658407

Mayank Gupta;Pratik Chakraborty;Shankar Prakriya

引用次数: 0

Abstract

This letter proposes a novel uplink multiple access scheme that accommodates up to

$K$

low data-rate non-priority users (NPUs) within a selected priority user’s (PU) spectrum, without compromising the PU performance. The uplink base station decodes the PU symbol first, followed by the symbols of

$K$

NPUs, employing successive interference cancellation. A dynamic interference threshold limit, set after PU selection, determines

$K$

and NPU powers in closed-form using a novel instantaneous power allocation scheme (IPAS) inspired by underlay cognitive radio. Spectrum utilization is maximized with precise control over NPU target rate and

$K$

. Closed-form throughput analysis, validated via simulations, demonstrates superiority of the suggested scheme over a traditional multiple access employing static optimal power allocation.

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具有自适应干扰感知用户准入的优化上行频谱接入

这封信提出了一种新的上行多址方案，该方案可在选定的优先用户（PU）频谱内容纳多达$K$低数据速率非优先用户（npu），而不会影响PU性能。上行基站首先解码PU符号，然后解码$K$ npu符号，采用逐次干扰消除。在PU选择后设置动态干扰阈值限制，使用受底层认知无线电启发的新颖瞬时功率分配方案（IPAS）以封闭形式确定$K$和NPU功率。通过精确控制NPU目标速率和$K$，可以最大限度地提高频谱利用率。通过仿真验证的封闭式吞吐量分析表明，该方案优于采用静态最优功率分配的传统多址方案。

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

IEEE Communications Letters 工程技术-电信学

CiteScore

8.10

自引率

7.30%

发文量

590

审稿时长

2.8 months

期刊介绍： The IEEE Communications Letters publishes short papers in a rapid publication cycle on advances in the state-of-the-art of communication over different media and channels including wire, underground, waveguide, optical fiber, and storage channels. Both theoretical contributions (including new techniques, concepts, and analyses) and practical contributions (including system experiments and prototypes, and new applications) are encouraged. This journal focuses on the physical layer and the link layer of communication systems.