Title :
Adaptive modulated MIMO-OFDM for ultra wideband channel
Author :
Cao, Zhigang ; Mwangoka, Joseph W.
Author_Institution :
Dept. of Electr. Eng., Tsinghua Univ., Beijing, China
Abstract :
The development of ultra wideband (UWB) communications Is impeded by the drastic transmitted power limitations imposed by regulation authorities due to the "polluting" nature of these radio emissions with respect to existing services. In this work, uncoded adaptive modulated MIMO-OFDM benefit from both multiple transmit/receive antenna diversity order and exploiting the multipath diversity of the UWB channel It is used to enhance the link robustness through transmitting more information over subcarriers with better SNR. Simulations using modified S-V channel model indicates high system performance compared to conventional UWB-OFDM.
Keywords :
MIMO systems; OFDM modulation; adaptive antenna arrays; adaptive modulation; diversity reception; multipath channels; ultra wideband antennas; ultra wideband communication; MIMO-OFDM; adaptive modulation; multipath diversity; multiple input multiple output system; multiple receiving antenna; multiple transmitting antenna; orthogonal frequency division multiplexing; radio emission; ultra wideband channel; Adaptive arrays; Bandwidth; MIMO; OFDM modulation; Partial response channels; Pulse modulation; Receiving antennas; Robustness; Ultra wideband antennas; Ultra wideband technology; Adaptive Modulation; MIMO-OFDM; S-V mode; UWB;
Conference_Titel :
Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications, 2005. MAPE 2005. IEEE International Symposium on
Print_ISBN :
0-7803-9128-4
DOI :
10.1109/MAPE.2005.1618097
