认知MIMO系统的BD预编码方案

2009 IEEE International Conference on Network Infrastructure and Digital Content Pub Date : 2009-12-31 DOI:10.1109/ICNIDC.2009.5360966

Caihong Zhang, Li Guo

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引用次数: 13

摘要

研究认知无线电(CR)网络中多用户多输入多输出(MU-MIMO)系统下行链路的预编码方案。通过一种预编码方案，允许多个认知用户与主用户共存，从而利用该频段。在pu干扰约束和总传输功率约束下使cu和速率最大化的容量问题具有较高的复杂性。为了简化这一问题，本文提出了两种次优预编码方案，以预消除对pu的同信道干扰并减轻认知用户(cu)之间的干扰。仿真结果表明，这两种次优算法都能以较低的复杂度获得较高的和速率吞吐量。

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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BD precoding schemes for cognitive MIMO system

This paper focuses on pre-coding schemes for the downlink of multiple user multi-input multi-output (MU-MIMO) system in cognitive radio (CR) network. The spectrum band can be utilized by allowing a number of cognitive users to coexist with primary users (PUs) through a pre-coding scheme. The capacity problems maximize the sum rate of CUs subject to the interference constraint for PUs and total transmitted power constraint can be solved with high complexity. To simplify the problem, this paper presents two suboptimal pre-coding schemes that pre-cancel the co-channel interference to PUs as well as mitigate interference between cognitive users (CUs). Simulation results show that the two suboptimal algorithms are able to achieve high sum rate throughput with low complexity.

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2009 IEEE International Conference on Network Infrastructure and Digital Content

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