TY - GEN
T1 - A carrierless UWB/OFDM system
AU - Xu, Bin
AU - Yang, Chenyang
AU - Mao, Shiyi
PY - 2004
Y1 - 2004
N2 - A carrierless UWB/OFDM system with pulse-based modulations (CL-UWB/OFDM) and its corresponding signal processing algorithms are presented in this paper. Compared with the traditional OFDM system, the CL-UWB/OFDM approach has several distinct characteristics. Firstly, the time-domain signals generated by IDFT are real rather than complex value due to the conjugate symmetry relationship of the frequency-domain signals. Secondly, a train of extremely short pulses instead of a sinusoidal carrier is employed to convey information. Thirdly, the received signals are orderly sampled through multiple parallel branches by exploiting the feature that the pulse repetition period is much larger than the duration of each pulse. Finally, the signals of each branch are independent of that of the other branches. Hence these branches resemble the multiple fading-independent antennas in classical narrow-band systems. Due to the above properties, the CL-UWB/OFDM system has not only all virtues of the traditional OFDM system, such as resistance to multipath interference and narrow-band interference, but also other advantages, for instance, excellent immunity to fading and frequency offset, simpler transceiver, and low power spectral density.
AB - A carrierless UWB/OFDM system with pulse-based modulations (CL-UWB/OFDM) and its corresponding signal processing algorithms are presented in this paper. Compared with the traditional OFDM system, the CL-UWB/OFDM approach has several distinct characteristics. Firstly, the time-domain signals generated by IDFT are real rather than complex value due to the conjugate symmetry relationship of the frequency-domain signals. Secondly, a train of extremely short pulses instead of a sinusoidal carrier is employed to convey information. Thirdly, the received signals are orderly sampled through multiple parallel branches by exploiting the feature that the pulse repetition period is much larger than the duration of each pulse. Finally, the signals of each branch are independent of that of the other branches. Hence these branches resemble the multiple fading-independent antennas in classical narrow-band systems. Due to the above properties, the CL-UWB/OFDM system has not only all virtues of the traditional OFDM system, such as resistance to multipath interference and narrow-band interference, but also other advantages, for instance, excellent immunity to fading and frequency offset, simpler transceiver, and low power spectral density.
UR - https://www.scopus.com/pages/publications/7644233828
U2 - 10.1109/ICOSP.2004.1442093
DO - 10.1109/ICOSP.2004.1442093
M3 - 会议稿件
AN - SCOPUS:7644233828
SN - 0780384067
T3 - International Conference on Signal Processing Proceedings, ICSP
SP - 1865
EP - 1869
BT - 2004 7th International Conference on Signal Processing Proceedings (ICSP'04)
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 7th International Conference on Signal Processing, ICSP 2004
Y2 - 31 August 2004 through 4 September 2004
ER -