Capacity region of multiuser shared channel with time-varying transmission power

Authors:
Hanbyul Seo;Daeyoung Park;Byeong Gi Lee
Affiliations:
Mobile Communication Technology Research Laboratory, LG Electronics, Kyungki-do, Korea;School of Information and Communication Engineering, Inha University, Incheon, Korea;School of Electrical Engineering and INMC, Seoul National University, Seoul, Korea
Venue:
IEEE Transactions on Communications
Year:
2009

Citing 8
Cited 0

A framework for opportunistic scheduling in wireless networks

Computer Networks: The International Journal of Computer and Telecommunications Networking
Proportional-fair power allocation with CDF-based scheduling for fair and efficient multiuser OFDM systems

IEEE Transactions on Wireless Communications
Effect of circuit switched services on the capacity of HSDPA

IEEE Transactions on Wireless Communications
Opportunistic beamforming using dumb antennas

IEEE Transactions on Information Theory
CDMA/HDR: a bandwidth efficient high speed wireless data service for nomadic users

IEEE Communications Magazine
Forward high-speed wireless packet data service in IS-2000 - 1×EV-DV

IEEE Communications Magazine
Opportunistic transmission scheduling with resource-sharing constraints in wireless networks

IEEE Journal on Selected Areas in Communications
Transmit power adaptation for multiuser OFDM systems

IEEE Journal on Selected Areas in Communications

Quantified Score

Hi-index	0.00

Visualization

Abstract

In this paper, we investigate the capacity region of a multiuser shared channel with time-varying transmission power, whose typical examples are the Forward Packet Data Channel (F-PDCH) of IS-2000 1xEV-DV system and the High Speed Downlink Shared Channel (HS-DSCH) in 3GPP High Speed Downlink Packet Access (HSDPA) system. The concavity of the throughput yields the property that additional power contributes more to a weaker user having a lower channel gain than to a stronger user. Noting this property, we consider a power-balanced policy which tries to balance the received SNR of each user by serving a weaker user with higher transmission power. Then, we establish the equivalence of the power-balanced policy and the Pareto optimal policy which yields a throughput vector at the boundary of the capacity region. This enables to characterize the capacity region explicitly, and also renders an easy means to maximize the total throughput while meeting each user's requirement.