Information-theoretic aspects of adaptive multicoding for uncertainty tolerance on CDMA fading channels

Richard J. Barton

doi:10.1117/12.434454

27 July 2001 Information-theoretic aspects of adaptive multicoding for uncertainty tolerance on CDMA fading channels

Richard J. Barton

Proceedings Volume 4531, Modeling and Design of Wireless Networks; (2001) https://doi.org/10.1117/12.434454
Event: ITCom 2001: International Symposium on the Convergence of IT and Communications, 2001, Denver, CO, United States

Abstract

We consider the problem of adaptive modulation and receiver design for DS-CDMA fading channels with imperfect channel state information. The goal is to adapt the geometry of the signal constellation within the subspace spanned by a small number of spreading codes (multicoding) in order to maximize throughput, minimize power consumption, or control bit error rate in the presence of uncertainty regarding instantaneous channel state information. We study two possible cost functions based on J-divergence and investigate their relationship to effective system capacity via bounds on the mutual information between the channel input and output given an estimate of the channel state information. The bounds will be used in future analytical and simulation studies to evaluate the performance improvement associated with the proposed adaptive modulation scheme.

Citation Download Citation

Richard J. Barton "Information-theoretic aspects of adaptive multicoding for uncertainty tolerance on CDMA fading channels", Proc. SPIE 4531, Modeling and Design of Wireless Networks, (27 July 2001); https://doi.org/10.1117/12.434454

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available