Title :
Joint channel estimation and decoding of space-time block codes
Author :
Xu, Changjiang ; Le-Ngoc, Tho
Author_Institution :
Dept. of Electr. & Comput. Eng., McGill Univ., Montreal, Que., Canada
Abstract :
The channel estimation of space-time (ST) block coding transmission using the constant modulus algorithm (CMA) is investigated. The ST block coding transmission is represented by an orthogonal vector-channel model. Based on this orthogonal model, a general expression of linear decoding decision rules for ST block codes and the sufficient and necessary conditions for convergence of the CMA are derived. It is shown that the CMA directly converges to a vector-channel under the orthogonal condition. A channel estimation method using the convergence value of the CMA is proposed for ST block coding transmission systems and is suitable for 1-D signaling or 2-D signaling using a square constellation. Illustrative results show that the proposed scheme provides a better accuracy than the cross-correlated method.
Keywords :
block codes; channel estimation; convergence of numerical methods; decoding; diversity reception; space-time codes; statistical analysis; telecommunication signalling; 1D signaling; 2D signaling; CMA convergence; ST block codes; channel estimation method; constant modulus algorithm convergence; cross-correlated method; decoding; joint channel estimation; linear decoding decision rules; necessary conditions; orthogonal model; orthogonal vector-channel model; space-time block codes; space-time block coding transmission; square constellation; sufficient conditions; transmit diversity; vector-channel; Block codes; Channel estimation; Constellation diagram; Convergence; Decoding; Diversity methods; Fading; Genetic expression; Receiving antennas; Wireless communication;
Conference_Titel :
Vehicular Technology Conference, 2002. Proceedings. VTC 2002-Fall. 2002 IEEE 56th
Print_ISBN :
0-7803-7467-3
DOI :
10.1109/VETECF.2002.1040474
