Title :
Study on V-BLAST OFDM Systems with Adaptive Bit and Power Allocation
Author :
Chi, Liangang ; Wu, Yanyan ; Zhang, Xin ; Yang, Dacheng
Author_Institution :
Sch. of Telecommun. Eng., Beijing Univ. of Posts & Telecommun.
Abstract :
In the V-BLAST OFDM system, if bits and power are allocated among all subchannels on average, the bad subchannels will deteriorate system performance largely. Based on this, adaptive V-BLAST OFDM system is proposed. And the water filling algorithm based on bisection iteration method is introduced. Simulation results show the proposed system satisfies the target BER and it outperforms the traditional one in spectral efficiency
Keywords :
OFDM modulation; error statistics; iterative methods; space-time adaptive processing; BER; OFDM systems; V-BLAST; adaptive bit allocation; bisection iteration method; power allocation; spectral efficiency; subchannels; water filling algorithm; Adaptive arrays; Adaptive systems; Frequency domain analysis; Intersymbol interference; MIMO; OFDM; Receiving antennas; System performance; Transmitters; Transmitting antennas;
Conference_Titel :
Signal Processing, 2006 8th International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-9736-3
Electronic_ISBN :
0-7803-9736-3
DOI :
10.1109/ICOSP.2006.345868
