Title :
Performance analysis and design optimization of LDPC coded MIMO OFDM systems
Author :
Lu, Ben ; Yue, Guosen ; Wang, Xiaodong
Author_Institution :
NEC Labs., Princeton, NJ, USA
Abstract :
The performance analysis and design optimization of low density parity check (LDPC) coded multiple-input-multiple-output (MIMO) orthogonal frequency-division multiplexing (OFDM) systems for high speed wireless transmission is considered. The tool of density evolution with mixture Gaussian approximations is used to optimize irregular LDPC codes and to compute minimum operational signal-to-noise ratios for ergodic MIMO OFDM channels. In particular, the optimization is done for various MIMO OFDM system configurations which include different number of antennas, different channel models and different demodulation schemes; and the optimized performance is compared to the corresponding channel capacity.
Keywords :
4G mobile communication; Gaussian distribution; MIMO systems; OFDM modulation; antenna arrays; channel capacity; demodulation; modulation coding; optimisation; parity check codes; MIMO OFDM system; antenna; channel capacity; demodulation scheme; design optimization; ergodic channel; high speed wireless transmission; low density parity check code; mixture Gaussian approximation; multiple-input-multiple-output system; orthogonal frequency-division multiplexing; performance analysis; signal-to-noise ratio; Channel capacity; Demodulation; Design optimization; Frequency division multiplexing; Gaussian approximation; MIMO; OFDM; Parity check codes; Performance analysis; Signal to noise ratio;
Conference_Titel :
Global Telecommunications Conference, 2003. GLOBECOM '03. IEEE
Print_ISBN :
0-7803-7974-8
DOI :
10.1109/GLOCOM.2003.1258451
