Achieving Maximum Degrees of Freedom of Two-Hop MIMO Alternate Half-Duplex Relaying System For Linear Transceivers: A Unified Transmission Framework for DF and AF Protocols

Author

Wei Liu ; Chuan Li ; Jian-Dong Li

Author_Institution

State Key Lab. of Integrated Service Networks, Xidian Univ., Xian, China

Volume

64

Issue

5

fYear

2015

fDate

May-15

Firstpage

2144

Lastpage

2148

Abstract

In this paper, a novel unified transmission framework in the context of both decode-and-forward (DF) and amplify-and-forward (AF) protocols was proposed for a two-hop multiple-input-multiple-output (MIMO) alternate half-duplex (HD) relaying system with M antennas for each node, which can achieve the maximum M degrees of freedom (DoFs) of the system, compared with the existing interference alignment (IA) schemes that can only get 3M/4 DoF. Furthermore, the proposed schemes require only two relays against three relays invoked in the existing IA schemes. Moreover, the proposed schemes are valid for the cases where the number of antennas M can be either even or odd, whereas the existing IA schemes can only apply for an even number of antennas M.

Keywords

MIMO communication; amplify and forward communication; decode and forward communication; protocols; radio transceivers; relay networks (telecommunication); AF protocols; DF protocols; M antennas; amplify-and-forward protocols; decode-and-forward protocols; interference alignment; linear transceivers; maximum degrees of freedom; two-hop MIMO alternate half-duplex relaying system; unified transmission framework; Antennas; Covariance matrices; Interference; MIMO; Protocols; Relays; Vectors; Alternate relay; degree of freedom (DoF); interference alignment (IA); multiple input multiple output (MIMO);

fLanguage

English

Journal_Title

Vehicular Technology, IEEE Transactions on

Publisher

ieee

ISSN

0018-9545

Type

jour

DOI

10.1109/TVT.2014.2338307

Filename

6868265