Title :
Channel estimation using orthogonal superimposed pilot for MIMO systems
Author :
Xing, Huiling ; Wei, Dongxing ; Yin, Fuliang
Author_Institution :
Sch. of Inf. & Commun. Eng., Dalian Univ. of Technol., Dalian, China
Abstract :
We propose a superimposed pilot-based channel estimation scheme for frequency-flat block fading multiple-input multiple-output (MIMO) channels. The superimposed pilot (SIP) is designed to be orthogonal to the transmitted data matrix, and the orthogonal property is obtained by exploiting the random space-time symbol interleaver at transmitter. Since the pilot and data can be totally decoupled, the performance degradation of channel estimation due to the presence of the unknown data is eliminated. Simulation results show the enhanced performance of the proposed scheme.
Keywords :
MIMO communication; block codes; channel estimation; fading channels; interleaved codes; radio transmitters; random codes; space-time codes; MIMO channel; MIMO system; channel estimation; frequency-flat block fading; multiple-input multiple-output system; orthogonal property; orthogonal superimposed pilot; performance degradation; random space-time symbol interleaver; transmitted data matrix; transmitter; Channel estimation; Covariance matrix; Fading; MIMO; Simulation; Time division multiplexing; Training; MIMO systems; channel estimation; orthogonal superimposed pilot (OSIP); space-time symbol interleavin;
Conference_Titel :
Signal Processing Systems (ICSPS), 2010 2nd International Conference on
Conference_Location :
Dalian
Print_ISBN :
978-1-4244-6892-8
Electronic_ISBN :
978-1-4244-6893-5
DOI :
10.1109/ICSPS.2010.5555739
