Title :
Isometric multisignature multiuser MC-CDMA in frequency-selective fading
Author :
Peacock, Matthew J M ; Collings, Iain B. ; Honig, Michael L.
Author_Institution :
Sch. of Electr. & Inf Eng., Sydney Univ., NSW, Australia
fDate :
27 June-2 July 2004
Abstract :
We characterize the asymptotic spectral efficiency of the linear minimum mean squared error (LMMSE) receiver for multiuser multisignature multicarrier (MC) code-division multiple access (CDMA) communication systems. We consider signatures which are orthogonal at each transmitter. Our results are asymptotic as the number of signatures per user and processing gain both tend to infinity with fixed ratio. Our results rely on approximating covariance matrices with unitarily invariant matrices that are asymptotically free.
Keywords :
code division multiple access; covariance matrices; fading channels; least mean squares methods; multiuser channels; radio receivers; LMMSE receiver; asymptotic spectral efficiency; covariance matrices; frequency-selective fading; isometric multisignature multiuser MC-CDMA; linear minimum mean squared error; multicarrier code-division multiple access systems; Australia; Computer errors; Covariance matrix; Fading; Frequency domain analysis; H infinity control; Multiaccess communication; Multicarrier code division multiple access; Random variables; Transmitters;
Conference_Titel :
Information Theory, 2004. ISIT 2004. Proceedings. International Symposium on
Print_ISBN :
0-7803-8280-3
DOI :
10.1109/ISIT.2004.1365473
