Title :
Performance analysis for AM in MIMO-OFDM systems
Author :
Yang, Aimin ; Xie, Gang ; Zhang, Ranran ; Tang, Bihua ; Liu, Yuanan
Author_Institution :
Beijing Univ. of Posts & Telecommun., Beijing
Abstract :
This paper proposes an adaptive modulation (AM) algorithm for multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) systems with Vertical Bell Laboratories Layered Space-Time (V-BLAST) and orthogonal-triangular decomposition (QR) detection firstly. Then performance analysis is derived in closed form. Simulation results show that the theoretic bit error rate (BER) and spectral efficiency are very accordant to the simulated ones, respectively. Through the simulation, it is also seen that the adaptive modulation algorithm can improve not only the spectral efficiency but also the BER performance, remarkably.
Keywords :
MIMO communication; OFDM modulation; adaptive modulation; error statistics; AM algorithm; BER; MIMO-OFDM systems; adaptive modulation; bit error rate; multiple-input multiple-output orthogonal frequency division multiplexing; performance analysis; spectral efficiency; Bit error rate; Feedback; MIMO; OFDM; Performance analysis; Physical layer; Quadrature amplitude modulation; Signal to noise ratio; Transmitters; Transmitting antennas;
Conference_Titel :
Communications and Information Technologies, 2007. ISCIT '07. International Symposium on
Conference_Location :
Sydney,. NSW
Print_ISBN :
978-1-4244-0976-1
Electronic_ISBN :
978-1-4244-0977-8
DOI :
10.1109/ISCIT.2007.4392032
