Title :
A Power Control Method Based on Post-Detection SINR Balancing in Cellular V-BLAST Systems
Author :
Wei, Chuanming ; Qiu, Ling ; Zhu, Jinkang
Author_Institution :
PCN&SS Lab., Univ. of Sci. & Technol. of China, Hefei
Abstract :
Power control is an effective technique to restrain the co-channel interference (CCI) in a cellular system. In this paper, an optimal power control method based on post-detection SINR balancing in a cellular V-BLAST system is proposed and its simplified solution with reduced complexity is also provided. The proposed optimal method may balance the post-detection SINR of each substream at mobile stations (MS) by adjusting power levels of every transmit antenna at base stations (BS) in the system. Simulation results show that it outperforms the existed power control method which adjusts the total transmit power of each BS to balance the SINR of received signal before space-time processing. The simplified solution significantly reduces the computing complexity with slight performance degradation
Keywords :
cellular radio; cochannel interference; optimal control; power control; signal detection; telecommunication control; transmitting antennas; CCI; base station; cellular V-BLAST system; cochannel interference; mobile station; optimal power control method; post-detection SINR balancing; signal-to-interference-noise ratio; transmitting antenna; vertical Bell Labs layered space-time processing; Base stations; Computational modeling; Degradation; Interchannel interference; Mobile antennas; Power control; Radiofrequency interference; Signal processing; Signal to noise ratio; Transmitting antennas;
Conference_Titel :
Spread Spectrum Techniques and Applications, 2006 IEEE Ninth International Symposium on
Conference_Location :
Manaus-Amazon
Print_ISBN :
0-7803-9779-7
Electronic_ISBN :
0-7803-9780-0
DOI :
10.1109/ISSSTA.2006.311775
