电子学报2017，Vol.45Issue(3)：662-668,7.DOI:10.3969/j.issn.0372-2112.2017.03.024
一种最大化系统用户速率下限的MIMO-MAC有限反馈干扰对齐算法
A Limited Feedback-Based Interference Alignment Algorithm to Maximize the Rate Lower Bound in Interfering MIMO-MAC
摘要
Abstract
We propose a new code word selected scheme that directly selects code words to maximize the rate lower bound and combine bit allocation algorithm to reduce the sum rate loss,which is based on analyzing the disadvantages of the traditional limited feedback interference alignment scheme in two-cell interfering MIMO-MAC.Meanwhile,we adopt MAX-SINR criterion to decode the target signal.Unlike the traditional limited feedback schemes which are based on minimum chordal distance or alignment degree criterion,we select optimized code words from the perspective of maximizing the rate lower bound.Further,we generate the sets of code words which are close to perfect precoder,and select the optimized code words in these sets through low complexity and suboptimal global searching.The simulation results verify that the proposed algorithm effectively improves the performance of system and improves the rate lower bound compared with the existing typical algorithms.关键词
干扰对齐/MIMO-MAC/有限反馈/最大化用户速率下界/码字选择/比特分配Key words
interference alignment/MIMO-MAC/limited feedback/maximizing the rate lower bound/code words selected/bit allocation分类
信息技术与安全科学引用本文复制引用
谢显中,张森林,聂俊美,雷维嘉..一种最大化系统用户速率下限的MIMO-MAC有限反馈干扰对齐算法[J].电子学报,2017,45(3):662-668,7.基金项目
国家自然科学基金(No.61271259,No.61471076) （No.61271259,No.61471076）
重庆市教委科学技术研究项目(No.KJ120501,No.KJ130536) （No.KJ120501,No.KJ130536）
长江学者和创新团队发展计划(No.IRT1299) （No.IRT1299）
重庆市科委重点实验室专项经费(CSTC)资助课题 （CSTC）
