NDLI: Sum-Rate Maximization for <?Pub _newline ?>Two-Way Active Channels

Content Provider	IEEE Xplore Digital Library
Author	Abbasi-Saei, P. Shahbazpanahi, S.
Copyright Year	1991
Abstract	A two-way active parallel channel refers to a communication link between two transceivers, where the subchannel gains between the two transceivers can be adjusted such that a given performance criterion is optimized. A two-way active channel can have reciprocal subchannels, meaning that the subchannel gains in both communication directions are identical. Otherwise, if the gains of each subchannel in the two communication directions are different, the active channel is referred to as non-reciprocal. In this paper, we consider the problem of sum-rate maximization for reciprocal and non-reciprocal two-way active channels under two constraints on the transceivers’ transmit powers and a third constraint on the channel power (i.e., the sum of squared of the subchannel gains). We prove rigorously that for such active channels, in order to maximize the sum-rate, only a subset of the subchannels will have to be active. We also provide the optimal values of the subchannel gains and the optimal values of the transceivers’ transmit powers over different subchannels in closed forms. Simulation results show that parallel active channels can outperform their passive counterparts, where the subchannel gains are fixed, and thus, they cannot be adjusted.
Sponsorship	IEEE Signal Processing Society
Starting Page	1369
Ending Page	1382
Page Count	14
File Size	2640339
File Format	PDF
ISSN	1053587X
Volume Number	64
Issue Number	6
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2016-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Transceivers Relays Noise Resource management Optical transmitters Receivers MIMO two-way channels Active channel bi-directional channel non-reciprocal channel parallel channel power allocation reciprocal channel sum-rate maximization
Content Type	Text
Resource Type	Article
Subject	Signal Processing Electrical and Electronic Engineering

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