Title :
Block-Shanno MBER algorithm in a spatial multiuser MIMO/OFDM
Author :
Samir, Tamer A. ; Elnoubi, Said ; Elnashar, Ayman
Author_Institution :
Etihad Etisalat, Riyadh
Abstract :
In this paper, we deploy a modified version of Shanno algorithm in order to optimize the bit error rate (BER) cost function using a nonlinear block optimization strategy for its minimization. The resulting algorithm is called the Block Shanno Minimum BER (BSMBER), which is conducted in the design of spatial multiuser receivers for orthogonal frequency division multiplexing (OFDM) system using multiple antennas at the transmitter and receivers. Adaptive resource managements are considered assuming instantaneous channel knowledge. Simulation analyses show the enhancements in convergence rate and BER performance of the proposed BSMBER over the minimum mean squared error (MMSE) and other minimum BER (MBER) based algorithms. In addition, BSMBER has faster convergence rate over the Gradient Newton algorithms but loses some performance enhancements in the sense of the BER steady states while maintaining linearity in complexity.
Keywords :
MIMO communication; Newton method; OFDM modulation; error statistics; multiuser channels; receivers; telecommunication network management; Block Shanno minimum BER; Block-Shanno MBER algorithm; Shanno algorithm; adaptive resource managements; bit error rate; gradient Newton algorithms; minimum mean squared error; multiple antennas; nonlinear block optimization; orthogonal frequency division multiplexing system; spatial multiuser MIMO/OFDM; spatial multiuser receivers; Algorithm design and analysis; Bit error rate; Convergence; Cost function; MIMO; Minimization methods; OFDM; Receiving antennas; Transmitters; Transmitting antennas; BER; MIMO; MMSE; MUD; OFDM; stochastic gradient algorithms;
Conference_Titel :
Wireless Conference, 2008. EW 2008. 14th European
Conference_Location :
Prague
Print_ISBN :
978-3-8007-3102-2
DOI :
10.1109/EW.2008.4623901