DocumentCode
2939275
Title
Gradient Descent Interference Avoidance with Target SIR Matching
Author
Popescu, D.C. ; Popescu, O. ; Rawat, D.B.
Author_Institution
Old Dominion Univ., Norfolk
fYear
2008
fDate
10-12 Jan. 2008
Firstpage
200
Lastpage
204
Abstract
In this paper we present a new algorithm for joint codeword and power adaptation in the uplink of code division multiple access (CDMA) systems, in which codewords are adjusted using gradient-descent interference avoidance, and powers are updated to match target signal-to-interference plus noise-ratio (SINR) values. The proposed algorithm is analyzed and illustrated with numerical examples obtained from simulations.
Keywords
code division multiple access; gradient methods; interference (signal); CDMA system; code division multiple access; codeword adaptation; gradient descent interference avoidance; signal-to-interference plus noise-ratio; AWGN; Additive white noise; Contacts; Covariance matrix; Gaussian noise; Interference; Multiaccess communication; Signal processing; Signal to noise ratio; Transmitters;
fLanguage
English
Publisher
ieee
Conference_Titel
Consumer Communications and Networking Conference, 2008. CCNC 2008. 5th IEEE
Conference_Location
Las Vegas, NV
Print_ISBN
978-1-4244-1456-7
Electronic_ISBN
978-1-4244-1457-4
Type
conf
DOI
10.1109/ccnc08.2007.51
Filename
4446349
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