Title :
On the performance of Alamouti-based OFDM system with multiuser resource allocation and scheduling
Author :
Leng, Nana ; Yang, Shouyi ; Lu, Yanhui
Author_Institution :
Sch. of Inf. Eng., Zhengzhou Univ., Zhengzhou, China
Abstract :
Efficient resource management has been a very appealing issue in the operation of wireless communication system. With the goal of minimizing the total transmit power, we mainly discussed the constant-bit-rate (CBR) case for multiuser MIMO-OFDM system, and developed a novel dynamic subcarrier allocation criteria based on Alamouti scheme with a tradeoff between the complexity of implementation and BER performance against eigen beamforming. The proposed scheme, including antenna selection, dynamic subcarrier assignment among users and adaptive bit loading, can acquire transmitting/receiving diversity and multiuser diversity simultaneously. Simulations showed that the given scheme can optimize the system BER performance.
Keywords :
MIMO communication; OFDM modulation; diversity reception; resource allocation; scheduling; Alamouti scheme; BER; adaptive bit loading; antenna selection; constant-bit-rate; dynamic subcarrier allocation; dynamic subcarrier assignment; eigenbeamforming; multiuser MIMO-OFDM system; multiuser diversity; multiuser resource allocation; resource management; scheduling; transmitting/receiving diversity; wireless communication system; Adaptive arrays; Array signal processing; Bit error rate; MIMO; OFDM; Receiving antennas; Resource management; Transmitters; Transmitting antennas; Wireless communication; Alamouti; OFDM; multiuser diversity; subcarrier allocation;
Conference_Titel :
Communication Systems, 2008. ICCS 2008. 11th IEEE Singapore International Conference on
Conference_Location :
Guangzhou
Print_ISBN :
978-1-4244-2423-8
Electronic_ISBN :
978-1-4244-2424-5
DOI :
10.1109/ICCS.2008.4737219
