Title :
Tracking fading multipath channel parameters, in CDMA systems, using a subspace-based method-an implementation perspective
Author :
Sengupta, Chaitali ; Cavallaro, Joseph R. ; Aazhang, Behnaam
Author_Institution :
Dept. of Electr. & Comput. Eng., Rice Univ., Houston, TX, USA
Abstract :
In this paper, we evaluate several implementation issues in the application of subspace based methods to tracking channel parameters in code division multiple access (CDMA) communication systems, in the presence of multipath fading. We focus on the behavior of singular value decomposition (SVD) based schemes while tracking the time variations in the signal subspace, due to fading. We also evaluate the application of several techniques to reduce the complexity of the computationally expensive SVD procedure, to the channel estimation problem
Keywords :
code division multiple access; computational complexity; fading; land mobile radio; multipath channels; parameter estimation; singular value decomposition; time-varying channels; tracking; CDMA communication system; SVD; channel estimation problem; channel parameters tracking; code division multiple access; complexity reduction; fading multipath channel parameters; mobile radio; signal subspace; singular value decomposition; subspace-based method; time variations tracking; Application software; Binary phase shift keying; Channel estimation; Communication channels; Delay; Fading; Modulation coding; Multiaccess communication; Phase modulation; Signal processing;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 1997. Waves of the Year 2000. PIMRC '97., The 8th IEEE International Symposium on
Conference_Location :
Helsinki
Print_ISBN :
0-7803-3871-5
DOI :
10.1109/PIMRC.1997.631177
