Coordinating transmit power and carrier phase for wireless networks with multi-packet reception capability

Title
Coordinating transmit power and carrier phase for wireless networks with multi-packet reception capability
Authors
박대영
Issue Date
2013
Publisher
EURASIP JOURNAL ON WIRELESS COMMUNICATIONS AND NETWORKING
Series/Report no.
EURASIP JOURNAL ON WIRELESS COMMUNICATIONS AND NETWORKING ; Vol2013 Startpage 1 Endpage 10
Abstract
Driven by advances in signal processing and multiuser detection (MUD) technologies, it has become possible for a wireless node to simultaneously receive multiple signals from other transmitters. In order to take full advantage of MUD in multi-packet reception (MPR) capable wireless networks, it is highly desirable to make the compound signals from multiple transmitters more separable on its constellation at the receiver by coordinating both the transmit power level and carrier phase offsets of the transmitters. In this article, we propose a feedback-based transmit power and carrier phase adjustment scheme that estimates the symbol energy and the carrier phase offset for each transmitter's received signal, computes the optimal received power level and carrier phase shift to maximize the minimum Euclidean distance between the constellation points, and finally feeds the optimal transmit power level and phase shift information back to the transmitters. We then evaluate the performance of the proposed transmit power and carrier phase adjustment scheme and subsequently show that the proposed scheme significantly reduces the error probability in a multiuser communication system having MPR capability.
URI
http://dspace.inha.ac.kr/handle/10505/33453
ISSN
1687-1499
Appears in Collections:
College of Engineering(공과대학) > Information and Communication Engineering (정보통신공학) > Journal Papers, Reports(정보통신공학 논문, 보고서)
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