Non-Causal Delayless Subband Adaptive Equalizer
Blekinge Institute of Technology, Department of Telecommunications and Signal Processing2002 (English)Conference paper (Refereed) Published
In wireless communication, multiple versions of the transmitted signals arrive at the receiver with different attenuations and time delays. Thus, an equalizer with long filter is required at the receiver to reverse the multipath effects. In this paper, a new non-causal delayless subband equalizer structure is proposed to reduce the computational complexity of the equalizer and to improve the channel tracking capability. This structure avoids the additional delays usually associated with the subband schemes. A design method is formulated to minimize the aliasing effect of the filter bank in the subbands. The significance of employing a non-causal equalizer is also emphasized. Simulation results show that the performance of the new structure is significantly improved by using the design method. Moreover, the complexity of the new subband equalizer is a fraction of the equivalent fullband at the expense of small degradation in the performance.
Place, publisher, year, edition, pages
Orlando: IEEE , 2002.
adaptive equalisers, adaptive filters, channel bank filters, computational complexity, minimisation, radio receivers
Telecommunications Signal Processing
IdentifiersURN: urn:nbn:se:bth-10350Local ID: oai:bth.se:forskinfo02CA7C17222AEEF8C1256C6A004CC263ISBN: 0 7803 7402 9OAI: oai:DiVA.org:bth-10350DiVA: diva2:838461
International Conference on Acoustic, Speech and Signal processing (ICASSP'02)