Title :
On the power efficient resource allocation for the overloaded multipath CDMA systems
Author :
Cotae, Paul ; Mbengue, Fatou Diop
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of the District of Columbia, Washington, DC
fDate :
March 30 2009-April 1 2009
Abstract :
A comparison of the optimal power allocation for a Gaussian vector channel subject to sum power constraint under water filling principle and inverse eigenvalue problem is given. We focus on the overloaded multipath DS - CDMA systems when the channel information is known at both transmitter and receiver. We generalize the sum of power constraint for each cell by considering p-norm matrices, and we provide numerical and graphical results for an overloaded CDMA cell in the presence and the absence of the multipath fading.
Keywords :
code division multiple access; eigenvalues and eigenfunctions; fading channels; multipath channels; spread spectrum communication; Gaussian vector channel; direct sequence code division multiple access; inverse eigenvalue problem; multipath fading; overloaded multipath DS-CDMA systems; p-norm matrices; power efficient resource allocation; water filling principle; Algorithm design and analysis; Bandwidth; Covariance matrix; Design engineering; Eigenvalues and eigenfunctions; Fading; Multiaccess communication; Power system modeling; Radio transmitters; Resource management; capacity maximization; inverse eigenvalue problem; multipath; overloaded CDMA systems; water-filing principle;
Conference_Titel :
Sarnoff Symposium, 2009. SARNOFF '09. IEEE
Conference_Location :
Princeton, NJ
Print_ISBN :
978-1-4244-3381-0
Electronic_ISBN :
978-1-4244-3382-7
DOI :
10.1109/SARNOF.2009.4850357
