Joint Integer-Forcing Precoder Design for MIMO Multiuser Relay System
| Autor: | Lizhen Shen, Jian Zhao, Guoqing Liu, Hao Cheng, Hua Jiang |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
multiple-input multiple-output (MIMO)
Optimization problem General Computer Science Computer science MIMO Data_CODINGANDINFORMATIONTHEORY 02 engineering and technology Topology Precoding law.invention Base station 0203 mechanical engineering Relay law compute-and-forward Telecommunications link Computer Science::Networking and Internet Architecture 0202 electrical engineering electronic engineering information engineering General Materials Science Computer Science::Information Theory linear precoding ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS integer-forcing General Engineering 020302 automobile design & engineering 020206 networking & telecommunications lcsh:Electrical engineering. Electronics. Nuclear engineering lcsh:TK1-9971 Decoding methods Multiuser Communication channel |
| Zdroj: | IEEE Access, Vol 7, Pp 81875-81882 (2019) |
| ISSN: | 2169-3536 |
| Popis: | In this paper, we study a relay-aided multiuser amplify-and-forward relaying system where a multi-antenna base station (BS) transmits downlink to multiple single-antenna mobile stations (MSs) via a multi-antenna relay station (RS). We propose a novel precoder design scheme by using the joint integer-forcing method to achieve high rate with the algebraic structure of lattice codes. Inspired by the concept of decoding the linear equations in compute-and-forward relay systems, the linear precoding matrix is generalized as an integer matrix that is approximate to the channel matrix, thereby mitigating the multiuser interference (MUI) at the MSs. The power allocation optimization problem at the BS is taken into account to improve the performance of the scheme. The simulation results show the outstanding performance of the proposed scheme. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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