Title :
Bit and power allocation for MIMO-OFDM systems with spatial mode selection over frequency-space-time-selective channels
Author :
Jung, Koochul ; Park, Chang Soon ; Lee, Kwang Bok
Author_Institution :
Sch. of Electr. Eng. & Comput. Sci., Seoul Nat. Univ., South Korea
Abstract :
The multiple input multiple output orthogonal frequency division multiplexing (MIMO-OFDM) system is known to reduce the negative impact of the time dispersive characteristic of channels and show high spectral efficiency. Various spatial modes, such as multiplexing and diversity, can be used to improve the spectral efficiency further. In this paper, we propose the bit and power allocation scheme for MIMO-OFDM systems with spatial mode selection over frequency-space-time-selective channels. Simulation results show that the proposed scheme provides improved throughput performance.
Keywords :
MIMO systems; OFDM modulation; channel allocation; dispersion (wave); diversity reception; frequency allocation; MIMO-OFDM systems; bit allocation; diversity; frequency-space-time-selective channels; multiple input multiple output orthogonal frequency division multiplexing system; multiplexing; power allocation; simulation; spatial modes; spatial selection; spectral efficiency; throughput performance; time dispersive channel characteristics; Computer science; Dispersion; Frequency diversity; MIMO; OFDM modulation; Power system modeling; Radio spectrum management; Receiving antennas; Throughput; Transmitting antennas;
Conference_Titel :
Vehicular Technology Conference, 2004. VTC2004-Fall. 2004 IEEE 60th
Print_ISBN :
0-7803-8521-7
DOI :
10.1109/VETECF.2004.1404695
