tailieunhanh - Báo cáo hóa học: " Reconfigurable Signal Processing and Hardware Architecture for Broadband Wireless Communications"

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: Reconfigurable Signal Processing and Hardware Architecture for Broadband Wireless Communications | EURASIP Journal on Wireless Communications and Networking 2005 3 323-332 2005 Ying-Chang Liang et al. Reconfigurable Signal Processing and Hardware Architecture for Broadband Wireless Communications Ying-Chang Liang Institute for InfoComm Research I2R 21 Heng Mui Keng Terrace Singapore 119613 Email ycliang@. Sayed Naveen Institute for InfoComm Research I2R 21 Heng Mui Keng Terrace Singapore 119613 Email naveen@ Santosh K. Pilakkat Institute for InfoComm Research I2R 21 Heng Mui Keng Terrace Singapore 119613 Email pilakkat@ Ashok K. Marath Institute for InfoComm Research I2R 21 Heng Mui Keng Terrace Singapore 119613 Email ashok@ Received 1 October 2004 Revised 22 April 2005 This paper proposes a broadband wireless transceiver which can be reconfigured to any type of cyclic-prefix CP -based communication systems including orthogonal frequency-division multiplexing OFDM single-carrier cyclic-prefix SCCP system multicarrier MC code-division multiple access MC-CDMA MC direct-sequence CDMA MC-DS-CDMA CP-based CDMA CP-CDMA and CP-based direct-sequence CDMA CP-DS-CDMA . A hardware platform is proposed and the reusable common blocks in such a transceiver are identified. The emphasis is on the equalizer design for mobile receivers. It is found that after block despreading operation MC-DS-CDMA and CP-DS-CDMA have the same equalization blocks as OFDM and SCCP systems respectively therefore hardware and software sharing is possible for these systems. An attempt has also been made to map the functional reconfigurable transceiver onto the proposed hardware platform. The different functional entities which will be required to perform the reconfiguration and realize the transceiver are explained. Keywords and phrases reconfigurable signal processing broadband communications software-defined radio cyclic prefix frequency-domain equalization. 1. INTRODUCTION A number of wireless standards govern personal wireless .