TY - GEN
T1 - Performance evaluation of ultra wideband-impulse radio (UWB-IR) with iterative equalization based on energy spreading transform (EST)
AU - Kobayashi, K.
AU - Ohtsuki, T.
AU - Kaneko, T.
N1 - Publisher Copyright:
© 2005 IEEE.
PY - 2005
Y1 - 2005
N2 - UWB-IR uses extreme short pulses and has the advantage of extremely high path resolutions. However, multipath is spread over dozens of symbols in the case of ultra highspeed communications of several hundreds Mbps, which causes the strong frequency selective channel and makes intersymbol interference (ISI) strongly influence it. As a result, the transmission performance degrades. Meanwhile, iterative equalization that uses energy spreading transform (EST) is proposed as an equalization method that decreases the influence of ISI. The performance of iterative equalization based on EST is evaluated with QPSK modulation on the Proakis-B channel. However, the performance of UWB-IR in UWB channel with iterative equalization based on EST has not been clarified. In this paper, we evaluate the bit error rate (BER) of UWB-IR with iterative equalization based on EST in UWB channel and compare it to that of UWB-IR with minimum mean square error (MMSE)-frequency domain equalization (FDE) and iterative equalization without EST. As a result, we show that UWB-IR with iterative equalization based on EST can achieve the better BER than UWB-IR with MMSE-FDE and UWB-IR with iterative equalization without EST.
AB - UWB-IR uses extreme short pulses and has the advantage of extremely high path resolutions. However, multipath is spread over dozens of symbols in the case of ultra highspeed communications of several hundreds Mbps, which causes the strong frequency selective channel and makes intersymbol interference (ISI) strongly influence it. As a result, the transmission performance degrades. Meanwhile, iterative equalization that uses energy spreading transform (EST) is proposed as an equalization method that decreases the influence of ISI. The performance of iterative equalization based on EST is evaluated with QPSK modulation on the Proakis-B channel. However, the performance of UWB-IR in UWB channel with iterative equalization based on EST has not been clarified. In this paper, we evaluate the bit error rate (BER) of UWB-IR with iterative equalization based on EST in UWB channel and compare it to that of UWB-IR with minimum mean square error (MMSE)-frequency domain equalization (FDE) and iterative equalization without EST. As a result, we show that UWB-IR with iterative equalization based on EST can achieve the better BER than UWB-IR with MMSE-FDE and UWB-IR with iterative equalization without EST.
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U2 - 10.1109/VETECF.2005.1558075
DO - 10.1109/VETECF.2005.1558075
M3 - Conference contribution
AN - SCOPUS:84931353931
T3 - IEEE Vehicular Technology Conference
SP - 996
EP - 1000
BT - VTC 2005-Fall
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 62nd Vehicular Technology Conference, VTC 2005
Y2 - 25 September 2005 through 28 September 2005
ER -