Title :
A simple and efficient channel estimation for MIMO OFDM code division multiplexing uplink systems
Author :
Cariou, Laurent ; Helard, Jean-Francois
Author_Institution :
INSA, Rennes, France
Abstract :
In this paper, we propose a novel and simple uplink MIMO channel estimation technique based on spread pilots technique well suited to SS-MC-MA schemes. The combination with Alamouti code is studied and two different approaches are compared. As the interferences are mainly generated by the channel variance on the pilot sequence, we demonstrate the advantages of a chip mapping optimization. The performances evaluated over a realistic MIMO channel show the efficiency of this novel scheme which appears to be a promising channel estimation for the uplink of the future wideband wireless networks.
Keywords :
MIMO systems; OFDM modulation; broadband networks; channel coding; channel estimation; code division multiplexing; spread spectrum communication; telecommunication links; Alamouti code; MIMO; OFDM; SS-MC-MA scheme; channel variance; chip mapping optimization; code division multiplexing; efficient channel estimation; multiple input-multiple output; orthogonal frequency division multiplexing; spread pilots technique; spread spectrum multicarrier multiple access; uplink system; wideband wireless network; Channel estimation; Code division multiplexing; Frequency diversity; Interference; MIMO; Multicarrier code division multiple access; OFDM; Partial transmit sequences; Wideband; Wireless networks;
Conference_Titel :
Signal Processing Advances in Wireless Communications, 2005 IEEE 6th Workshop on
Print_ISBN :
0-7803-8867-4
DOI :
10.1109/SPAWC.2005.1505895
