On the Design of Cognitive-Radio-Inspired Asymmetric Network Coding Transmissions in MIMO Systems

Zhao, Zhongyuan and Ding, Zhiguo and Peng, Mugen and Wang, Wenbo and Thompson, John S. (2015) On the Design of Cognitive-Radio-Inspired Asymmetric Network Coding Transmissions in MIMO Systems. IEEE Transactions on Vehicular Technology, 64 (3). pp. 1014-1025. ISSN 0018-9545

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Abstract

In this paper, a cognitive-radio-inspired asymmetric network coding (CR-AsNC) scheme is proposed for multiple-input-multiple-output (MIMO) cellular transmissions, where information exchange among users and base-station (BS) broadcasting can be accomplished simultaneously. The key idea is to apply the concept of cognitive radio (CR) in network coding transmissions, where the BS tries sending new information while helping users' transmissions as a relay. In particular, we design an asymmetric network coding method for information exchange between the BS and the users, although many existing works consider the design of network coding in symmetric scenarios. To approach the optimal performance, an iterative precoding design for CR-AsNC is first developed. Then, a channel-diagonalization-based precoding design with low complexity is proposed, to which power allocation can be optimized with a closed-form solution. The simulation results show that the proposed CR-AsNC scheme with precoding optimization can significantly improve system transmission performance.

Item Type:
Journal Article
Journal or Publication Title:
IEEE Transactions on Vehicular Technology
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2200/2202
Subjects:
ID Code:
84408
Deposited By:
Deposited On:
27 Jan 2017 14:44
Refereed?:
Yes
Published?:
Published
Last Modified:
17 Sep 2020 02:39