Title :
Iterative water-filling for Gaussian vector multiple access channels
Author :
Yu, Wei ; Rhee, Wonjong ; Boyd, Stephen ; Ciof, John M.
Author_Institution :
Dept. of Electr. Eng., Stanford Univ., CA, USA
Abstract :
We develop an efficient iterative water-filling algorithm to find an optimal transmit spectrum for maximum sum capacity in a Gaussian multiple access channel with vector inputs and a vector output. The iterative algorithm converges from any starting point and reaches within (K-1)/2 nats per output dimension from the K-user sum capacity after just one iteration
Keywords :
Gaussian channels; convergence of numerical methods; discrete time systems; iterative methods; memoryless systems; multi-access systems; multiuser channels; Gaussian vector multiple access channels; K-user sum capacity; iterative water-filling; maximum sum capacity; optimal transmit spectrum; vector inputs; vector output; Channel capacity; Covariance matrix; Electronic mail; Fading; Filling; Gaussian distribution; Intersymbol interference; Iterative algorithms; Network address translation; Resource management;
Conference_Titel :
Information Theory, 2001. Proceedings. 2001 IEEE International Symposium on
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-7123-2
DOI :
10.1109/ISIT.2001.936185
