Title :
Joint Transceiver Design for Non-Concurrent MIMO Two-Way AF Relaying
Author :
Budhiraja, Rohit ; Ramamurthi, Bhaskar
Author_Institution :
Dept. of Electr. Eng., Indian Inst. of Technol. Madras, Chennai, India
Abstract :
We consider an amplify-and-forward infrastructure non-concurrent two-way relaying (ncTWR) scenario where a base station serves a transmit-only user TUE and a receive-only user RUE. Unlike conventional two-way relaying, the RUE in ncTWR experiences back-propagating interference (BI). Uniform channel decomposition and Tomlinson-Harashima precoding improve the bit error rate (BER) of multiple-antenna-multiple-output (MIMO) systems. Inspired by these techniques, we design a transceiver to reduce BER of both users in MIMO ncTWR. This transceiver cancels BI of the RUE and uses spatial noise whitening filters, designed herein, to uniformly decompose MIMO channels of both TUE and RUE. This letter quantifies the improved BER of the proposed transceiver.
Keywords :
MIMO communication; amplify and forward communication; error statistics; interference; precoding; relay networks (telecommunication); transceivers; BER; BI; MIMO channels; RUE; TUE; Tomlinson-Harashima precoding; amplify-and-forward infrastructure nonconcurrent two-way relaying cheme; back-propagating interference; bit error rate; joint transceiver design; multiple-input-multiple-output systems; nonconcurrent MIMO two-way AF relaying scheme; receive-only user; transmit-only user; uniform channel decomposition; Bismuth; Bit error rate; MIMO; Receivers; Relays; Signal to noise ratio; Transceivers; Back-propagating interference (BI); Tomlinson???Harashima precoding (THP); tomlinsonharashima precoding (THP); uniform channel decomposition;
Journal_Title :
Wireless Communications Letters, IEEE
DOI :
10.1109/LWC.2015.2446971
