Application of Analog Network Coding to MIMO Two-Way Relay Channel in Cellular Systems
Ming Gan, Zhiguo Ding, Xuchu Dai
TL;DR
This paper proposes an analog network coding protocol for MIMO two-way cellular networks, introducing block signal alignment and joint precoding algorithms to improve interference management and channel gain, validated through simulations.
Contribution
It introduces a novel analog network coding protocol with block signal alignment and joint precoding algorithms for MIMO two-way cellular systems.
Findings
Enhanced interference nulling with block signal alignment
Algorithms optimize precoding for outage performance
Simulation results confirm improved protocol performance
Abstract
An efficient analog network coding transmission protocol is proposed in this letter for a MIMO two way cellular network. Block signal alignment is first proposed to null the inter-user interference for multi-antenna users, which makes the dimensions of aligned space larger compared with the existing signal alignment. Two algorithms are developed to jointly design the precoding matrices at the relay and BS for outage optimization. Especially, the last algorithm is designed to maximize the effective channel gain to the effective noise gain ratio. The performance of this transmission protocol is also verified by simulations.
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