Colocated and Distributed Switch-and-Stay Combining: Optimality Under Switching Rate Constraints

Jataprolu MK, Michalopoulos DS, Schober R (2013)

Publication Language: English

Publication Type: Journal article

Publication year: 2013

Journal

IEEE Transactions on Vehicular Technology Institute of Electrical and Electronics Engineers (IEEE)

Book Volume: 63

Pages Range: 451 - 457

Journal Issue: 1

DOI: 10.1109/TVT.2013.2272221

Abstract

Switch-and-stay combining (SSC) is a low-complexity alternative to selection combining (SC) in dual diversity systems. These diversity systems can either be the conventional colocated diversity setups, where two antennas are available at the receiver, or the cooperative diversity systems, where two relays assist one transmitter-receiver pair. In SSC, a single diversity branch (i.e., a single antenna or a single relay) is activated and remains active as long as the corresponding channel is sufficiently strong, regardless of the quality of the other branch. Thereby, the switching threshold determines both the bit error rate (BER) and the switching rate, which are defined as the number of times per second a branch switching occurs. Since high switching rates are not preferred in practice, in this paper, we optimize the switching threshold of SSC to minimize the BER under a constraint on the switching rate. To this end, we derive approximate closed-form solutions for the optimization problem for both the colocated and the distributed antenna case. These solutions are shown to achieve close-to-optimal performance through computer simulations.

Authors with CRIS profile

Robert Schober Lehrstuhl für Digitale Übertragung

Involved external institutions

University of British Columbia CA Canada (CA) Indian Institute of Technology Madras IN India (IN)

How to cite

APA:

Jataprolu, M.K., Michalopoulos, D.S., & Schober, R. (2013). Colocated and Distributed Switch-and-Stay Combining: Optimality Under Switching Rate Constraints. IEEE Transactions on Vehicular Technology, 63(1), 451 - 457. https://dx.doi.org/10.1109/TVT.2013.2272221

MLA:

Jataprolu, Manjunath Kashyap, Diomidis S. Michalopoulos, and Robert Schober. "Colocated and Distributed Switch-and-Stay Combining: Optimality Under Switching Rate Constraints." IEEE Transactions on Vehicular Technology 63.1 (2013): 451 - 457.

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