Title :
Solving the ZF Receiver Equation for MIMO Systems Under Variable Channel Conditions Using the Block Fourier Algorithm
Author :
Silva, João Carlos ; Dinis, Rui ; Rodrigues, António ; Cercas, Francisco ; Souto, Nuno ; Jesus, Sérgio
Author_Institution :
Inst. de Telecomuniacoes, Instituto Superior Tecnico, Lisbon
Abstract :
The ZF (zero forcing) algorithm is one of the best linear receivers for DS-CDMA (direct sequence-code division multiple access). However, for the case of MIMO/BLAST (multiple input, multiple output/Bell Laboratories layered space time) with high loading, the perceived complexity of the ZF receiver is taken as too big, and thus other types of receivers are employed, yielding worse results. In this paper, we investigate the complexity of the solution to the MIMO ZF receiver´s equations using block-Fourier algorithms, for both steady and unsteady channel situations
Keywords :
Fourier transforms; MIMO communication; code division multiple access; spread spectrum communication; BLAST; Bell Laboratories layered space time system; DS-CDMA; MIMO system; ZF receiver equation; block Fourier algorithm; direct sequence-code division multiple access; linear receiver; multiple input-multiple output system; variable channel condition; zero forcing algorithm; Change detection algorithms; Discrete Fourier transforms; Equations; MIMO; Matrices; Matrix decomposition; Multiple access interference; Partitioning algorithms; Spread spectrum communication; Telecommunications; Block Fourier; MIMO; Zero Forcing; unsteady channels;
Conference_Titel :
Spread Spectrum Techniques and Applications, 2006 IEEE Ninth International Symposium on
Conference_Location :
Manaus-Amazon
Print_ISBN :
0-7803-9779-7
Electronic_ISBN :
0-7803-9780-0
DOI :
10.1109/ISSSTA.2006.311780
