Proceedings ArticleDOI
Information capacity and power control in single-cell multiuser communications
Raymond Knopp,Pierre A. Humblet +1 more
- Vol. 1, pp 331-335
TLDR
By examining the bit error-rate with antipodal signalling, it is shown that an increase in capacity over a perfectly-power controlled (Gaussian) channel can be achieved, especially if the number of users is large, and the inherent diversity in multiuser communications over fading channels is shown.Abstract:
We consider a power control scheme for maximizing the information capacity of the uplink in single-cell multiuser communications with frequency-flat fading, under the assumption that the users attenuations are measured perfectly. Its main characteristics are that only one user transmits over the entire bandwidth at any particular time instant and that the users are allocated more power when their channels are good, and less when they are bad. Moreover, these features are independent of the statistics of the fading. Numerical results are presented for the case of single-path Rayleigh fading. We show that an increase in capacity over a perfectly-power controlled (Gaussian) channel can be achieved, especially if the number of users is large. By examining the bit error-rate with antipodal signalling, we show the inherent diversity in multiuser communications over fading channels.read more
Citations
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Journal ArticleDOI
A Survey on Uplink Resource Allocation in OFDMA Wireless Networks
Elias Yaacoub,Zaher Dawy +1 more
TL;DR: A survey of resource allocation and scheduling schemes in OFDMA wireless networks is presented and the focus is on the uplink direction.
Journal ArticleDOI
Cross-layer wireless resource allocation
Randall A. Berry,Edmund M. Yeh +1 more
TL;DR: In this paper, several basic cross-layer resource allocation problems for wireless fading channels are considered, focusing on the characterization of fundamental performance limits while taking into account both network layer QoS and physical layer performance.
Journal ArticleDOI
A generalized framework for distributed power control in wireless networks
Chi Wan Sung,Kin-Kwong Leung +1 more
TL;DR: This paper generalizes Yates' result and establishes a new framework, which is applicable to systems supporting opportunistic communications and with heterogeneous service requirements, and shows that the proposed algorithm yields significant improvement in throughput when compared with the conventional target tracking approach.
Journal ArticleDOI
On the power efficiency of sensory and ad-hoc wireless networks
A.F. Dana,Babak Hassibi +1 more
TL;DR: This paper shows that for a random sensory wireless network with n users (nodes) placed in a domain of fixed area, with probability converging to one as n grows, the power efficiency scales at least by a factor of /spl radic/n.
Journal ArticleDOI
An overview of scheduling algorithms in MIMO-based fourth-generation wireless systems
Wessam Ajib,David Haccoun +1 more
TL;DR: An overview of the scheduling algorithms proposed for fourth-generation multiuser wireless networks based on multiple-input multiple-output technology is presented and several resource allocation schemes are discussed for this hybrid multiple access system.
References
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Book
Elements of information theory
Thomas M. Cover,Joy A. Thomas +1 more
TL;DR: The author examines the role of entropy, inequality, and randomness in the design of codes and the construction of codes in the rapidly changing environment.
Book
Information Theory and Reliable Communication
TL;DR: This chapter discusses Coding for Discrete Sources, Techniques for Coding and Decoding, and Source Coding with a Fidelity Criterion.
Journal ArticleDOI
Information theoretic considerations for cellular mobile radio
TL;DR: Some information-theoretic considerations used to determine upper bounds on the information rates that can be reliably transmitted over a two-ray propagation path mobile radio channel model, operating in a time division multiplex access (TDMA) regime, under given decoding delay constraints are presented.
Journal ArticleDOI
Shannon-theoretic approach to a Gaussian cellular multiple-access channel
TL;DR: Shannon-theoretic limits for a very simple cellular multiple-access system, and a scheme which does not require joint decoding of all the users, and is, in many cases, close to optimal.
Journal ArticleDOI
Estimate of channel capacity in Rayleigh fading environment
TL;DR: In this article, the authors derived the channel capacity in a Rayleigh fading environment and showed that channel capacity is always lower than that in a Gaussian-noise environment and that diversity schemes can improve channel capacity.