Paper Info
Title
Joint iterative power allocation and interference suppression algorithms for cooperative spread spectrum networks
Abstract
This work presents joint iterative power allocation and interference suppression algorithms for spread spectrum networks with multiple relays and the amplify and forward cooperation strategy. A joint constrained optimization framework that considers the allocation of power levels across the relays subject to individual and global power constraints and the design of linear receivers for interference suppression is proposed. Constrained minimum mean-squared error (MMSE) expressions for the parameter vectors that determine the optimal power levels across the relays and the parameters of the linear receivers are derived. In order to solve the proposed optimization problems efficiently, stochastic gradient (SG) algorithms for adaptive joint iterative power allocation, and receiver and channel parameter estimation are developed. The results of simulations show that the proposed algorithms obtain significant gains in performance and capacity over existing cooperative and non-cooperative schemes.
Year
DOI
Venue
2010
10.1109/ICASSP.2010.5496071
Acoustics Speech and Signal Processing
Keywords
DocType
ISSN
gradient methods,interference suppression,iterative methods,least mean squares methods,parameter estimation,spread spectrum communication,stochastic processes,MMSE,adaptive joint iterative power allocation,amplify and forward cooperation strategy,channel parameter estimation,cooperative spread spectrum networks,global power constraints,interference suppression algorithms,joint constrained optimization framework,linear receivers,minimum mean-squared error expressions,multiple relays,noncooperative schemes,parameter vectors,receiver parameter estimation,stochastic gradient algorithms,Spread spectrum communication,cooperative systems,optimization methods,resource allocation
Conference
1520-6149 E-ISBN : 978-1-4244-4296-6
ISBN
Citations 
PageRank 
978-1-4244-4296-6
0
0.34
References 
Authors
0
2
Name
Order
Citations
PageRank
Rodrigo C. de Lamare11461179.59
de Lamare, R.C.265233.42