Title :
A New Transmit Scheme Combining Beamforming with Space-Time Block Coding
Author :
Lin, Min ; Yang, Luxi ; Zhu, Wei-Ping ; Li, Min ; Li, Bin
Author_Institution :
Sch. of Inf. Sci. & Eng., Southeast Univ., Jiangsu
Abstract :
In this paper, a new transmit scheme combining beamforming (BF) with space-time block coding (STBC) is proposed for correlated fading channels. Based on maximizing the output mean signal-to-noise ratio (SNR) at the receiver, the transmitter BF weight vectors are first derived. Then, utilizing the minimal bit error rate (BER) upper bound as the design criterion, a simple power allocation algorithm is developed. Next, the BER performance of the system with the proposed transmit scheme is analyzed by considering an M-QAM constellation. Finally, computer simulation results are given to verify the effectiveness of the proposed scheme.
Keywords :
block codes; error statistics; fading channels; quadrature amplitude modulation; space-time codes; M-QAM constellation; correlated fading channels; minimal bit error rate; output mean signal-to-noise ratio; power allocation algorithm; space-time block coding; transmit scheme; transmitter BF weight vectors; Algorithm design and analysis; Array signal processing; Bit error rate; Block codes; Computer simulation; Fading; Performance analysis; Signal to noise ratio; Transmitters; Upper bound;
Conference_Titel :
Communications, 2008. ICC '08. IEEE International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-2075-9
Electronic_ISBN :
978-1-4244-2075-9
DOI :
10.1109/ICC.2008.744
