Title :
An adaptive multiple antenna transmission scheme for an OFDMA system
Author :
Kim, Yun Hee ; Hwang, Kyu Jong ; Kim, Kwang Soon ; KyungHi Chang
Author_Institution :
Electron. & Telecommun. Res. Inst., Daejeon, South Korea
Abstract :
We propose an orthogonal frequency division multiplexing frequency division multiple access (OFDMA) system with an adaptive multiple antenna transmission scheme for future wireless communication systems. In the system, both a transmit diversity scheme with high order modulation and a spatial multiplexing scheme with low order modulation are employed for the given spectral efficiency, between which the proper transmission scheme is selected according to the channel state. It is observed that the proposed system with a selection algorithm based on the post processing SNR reduce the average transmit power.
Keywords :
OFDM modulation; adaptive antenna arrays; diversity reception; frequency division multiple access; packet radio networks; space division multiplexing; OFDMA system; SNR; adaptive multiple antenna transmission; channel state; orthogonal frequency division multiplexing frequency division multiple access; spatial multiplexing scheme; spectral efficiency; transmit diversity; wireless communication; Adaptive arrays; Block codes; Fading; Modulation coding; OFDM; Performance analysis; Radio spectrum management; Resource management; Transmitting antennas; Wireless communication;
Conference_Titel :
Communication Technology Proceedings, 2003. ICCT 2003. International Conference on
Print_ISBN :
7-5635-0686-1
DOI :
10.1109/ICCT.2003.1209784
