Modified Tomlinson-Harashima Precoding for Downlink MU-MIMO Channel with Arbitrary Precoder

被引：0

作者：

Farmanbar, Hamid ^{[1
]}

Baligh, Hadi ^{[1
]}

机构：

[1] Huawei Technol Canada, Ottawa R&D Ctr, Ottawa, ON, Canada

来源：

2012 IEEE VEHICULAR TECHNOLOGY CONFERENCE (VTC FALL) | 2012年

关键词：

MIMO broadcast channel; Tomlinson-Harashima precoding; vector perturbation; multi-user power allocation;

D O I：

暂无

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

Tomlinson-Harashima precoding (THP) for downlink MU-MIMO channel can be modeled as user signal perturbation (constellation expansion) followed by linear precoding. The effective linear precoder in standard THP is merely a function of the MU-MIMO channel, which does not provide the flexibility for user power allocation. A modified THP algorithm is proposed so that the effective linear precoder can be arbitrary. As a special case, zero-forcing THP (ZF-THP) with arbitrary user power allocation is considered for which optimal user power allocation is derived to maximize the weighted sum-rate of users.

引用

页数：5

共 8 条

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