- Title
- User pairing and precoder design with Han-kobayashi transmission strategy in MU-MIMO multicell networks
- Creator
- Tam, H. H. M.; Tuan, H. D.; Ngo, D. T.; Che, E.
- Relation
- 2015 IEEE Global Conference on Signal and Information Processing (GlobalSIP). Proceedings of the 2015 IEEE Global Conference on Signal and Information Processing (GlobalSIP) (Orlando, FL 14-16 December, 2015) p. 123-127
- Publisher Link
- http://dx.doi.org/10.1109/GLOCOM.2014.7417833
- Publisher
- Institute of Electrical and Electronics Engineers (IEEE)
- Resource Type
- conference paper
- Date
- 2016
- Description
- This paper considers the Han-Kobayashi transmission strategy that mitigates the downlink intercell interference in a multiuser multi-input multi-output (MU-MIMO) multicell network. The base station (BS) splits the transmitted data of a user (UE) into a common message and a private message, the former of which is then decoded by a paired UE in another cell so as to reduce the respective cross-cell interference. Our aim here is to develop (i) A pairing rule that determines pairs of UEs to share common messages, and (ii) Optimal precoders at the BSs that maximize either the minimum UE throughput or the network sum-rate. To solve the combinatoric UE pairing problem, we propose a heuristic that pairs UEs with the largest corresponding cross-cell channel gains. This approach ensures that the most significant source of intercell interference is eliminated through common message decoding. We then apply the Frank-and-Wolfe procedure of concave programming to solve the highly nonconvex precoder design problems. We show that this procedure generates a sequence of improved solutions and eventually converges to at least a local optimum. Numerical results confirm the advantages of our proposed solution over the conventional strategy where intercell interference is treated as noise.
- Subject
- Frank-and-Wolfe procedure; Han-Kobayashi transmission strategy; intercell interference elimination; minimum UE throughput; multiuser multiinput multioutput multicell network; network sum-rate; nonconvex precoder design problem; optimal precoder; pairing rule; precoder design; user pairing; MU-MIMO multicell networks; base station; combinatoric UE pairing problem; common message decoding; concave programming; cross-cell channel gain; cross-cell interference reduction; downlink intercell interference mitigation
- Identifier
- http://hdl.handle.net/1959.13/1316219
- Identifier
- uon:23105
- Identifier
- ISBN:9781479959525
- Language
- eng
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