Title :
A Non-Cyclic Prefixed MIMO-OFDM System Based on a Recursive Algorithm of Joint Channel Estimation and Data Detection
Author :
Guo, Junqi ; Ren, Shubo ; Xiang, Haige
Author_Institution :
Satellite & Wireless Commun. Lab., Peking Univ., Beijing
Abstract :
We propose in this paper a non-cyclic prefixed multiple-input multiple-output orthogonal frequency division multiplexing (non-cp MIMO-OFDM) system based on a recursive algorithm of joint channel estimation and data detection. Unlike in the traditional cyclic prefixed MIMO-OFDM system, the transmitted sequence of the proposed system is given in the way that block-type pilot sequences and OFDM symbols have been arranged alternately without any cyclic prefix (CP) before each OFDM symbol. Moreover, a recursive algorithm of joint channel estimation and data detection (recursive-JCEDD) based on interference cancellation is proposed for the corresponding receivers. Simulation results show that the proposed system based on the recursive-JCEDD algorithm achieves lower bit error rate (BER) and higher information data rate than the traditional cyclic prefixed MIMO-OFDM system with least square (LS) or iterative LS channel estimation algorithm.
Keywords :
MIMO communication; OFDM modulation; channel estimation; error statistics; interference suppression; iterative methods; recursive estimation; bit error rate; block-type pilot sequence; data detection; interference cancellation; iterative LS channel estimation algorithm; joint channel estimation; noncyclic prefixed MIMO-OFDM system; recursive algorithm; Bit error rate; Channel estimation; Discrete Fourier transforms; Intersymbol interference; Iterative algorithms; Least squares approximation; MIMO; OFDM; State estimation; Transmitters;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2008. WiCOM '08. 4th International Conference on
Conference_Location :
Dalian
Print_ISBN :
978-1-4244-2107-7
Electronic_ISBN :
978-1-4244-2108-4
DOI :
10.1109/WiCom.2008.135