Design of codes for multicode CDMA based on correlation feedback from receiver

Adam Tarr; Michael D. Zoltowski

doi:10.1117/12.496924

23 July 2003 Design of codes for multicode CDMA based on correlation feedback from receiver

Adam Tarr, Michael D. Zoltowski

Proceedings Volume 5100, Digital Wireless Communications V; (2003) https://doi.org/10.1117/12.496924
Event: AeroSense 2003, 2003, Orlando, Florida, United States

Abstract

The multi-code CDMA problem, and the corresponding data and noise model is discussed. The problem of "crosstalk", which occurs when using an MMSE receiver in colored noise, is addressed. A method to avoid "cross-talk", by choosing the eigenvectors of the interference plus noise matrix as codes, is introduced. This approach is shown to produce codes that are orthogonal not only in the conventional sense, but also with respect to the interference plus noise matrix. The gain on the codes is shown to be inversely proportional to the corresponding eigenvalue. Simulation results demonstrate that the codes corresponding to the smallest eigenvalues dramatically out-perform the MMSE receiver for Walsh-Hadamard codes in terms of mean-square error (MSE).

Citation Download Citation

Adam Tarr and Michael D. Zoltowski "Design of codes for multicode CDMA based on correlation feedback from receiver", Proc. SPIE 5100, Digital Wireless Communications V, (23 July 2003); https://doi.org/10.1117/12.496924

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