tailieunhanh - Báo cáo hóa học: " Research Article Design of Nonuniform Filter Bank Transceivers for Frequency Selective Channels"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Design of Nonuniform Filter Bank Transceivers for Frequency Selective Channels | Hindawi Publishing Corporation EURASIP Journal on Advances in Signal Processing Volume 2007 Article ID 61396 12 pages doi 2007 61396 Research Article Design of Nonuniform Filter Bank Transceivers for Frequency Selective Channels Han-Ting Chiang 1 See-May Phoong 1 and Yuan-Pei Lin2 1 Department of Electrical Engineering Graduate Institute of Communication Engineering National Taiwan University Taipei 10617 Taiwan 2 Department of Electrical and Control Engineering National Chiao Tung University Hsinchu 300 Taiwan Received 14 January 2006 Revised 16 July 2006 Accepted 13 August 2006 Recommended by Soontorn Oraintara In recent years there has been considerable interest in the theory and design of filter bank transceivers due to their superior frequency response. In many applications it is desired to have transceivers that can support multiple services with different incoming data rates and different quality-of-service requirements. To meet these requirements we can either do resource allocation or design transceivers with a nonuniform bandwidth partition. In this paper we propose a method for the design of nonuniform filter bank transceivers for frequency selective channels. Both frequency response and signal-to-interference ratio SIR can be incorporated in the transceiver design. Moreover the technique can be extended to the case of nonuniform filter bank transceivers with rational sampling factors. Simulation results show that nonuniform filter bank transceivers with good filter responses as well as high SIR can be obtained by the proposed design method. Copyright 2007 Hindawi Publishing Corporation. All rights reserved. 1. INTRODUCTION The orthogonal frequency division multiplexing OFDM system has enjoyed great success in many wideband communication systems due to its ability to combat intersymbol interference ISI 1 . It is known that the transmitting and receiving filters of the OFDM transceiver have poor frequency responses. As a result many subchannels .