Title :
Versatile beamforming ASIC architecture for broadband fixed wireless access
Author :
Duan, Ji-Ning ; Ko, LiJen ; Daneshrad, Babak
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
Abstract :
This paper describes a highly flexible VLSI ASIC architecture targeted for use in present and future broadband fixed wireless access communication systems. The architecture features a novel structure for variable rate interpolation that allows it to operate at any user specified symbol rate from 625 kBaud to 10 MBaud. A unique shaping filter structure with programmable CSD coefficients is also implemented. The signal flow paths can also be reversed allowing the chip to be used in both the transmitter and the receiver portions of a communication system. Finally, anticipating operation in a TDMA network, all user programmable features can be quickly changed for each time slot
Keywords :
CMOS digital integrated circuits; VLSI; application specific integrated circuits; array signal processing; digital filters; digital signal processing chips; interpolation; radio access networks; telecommunication computing; TDMA network; beamforming ASIC architecture; broadband fixed wireless access; flexible VLSI ASIC architecture; programmable CSD coefficients; shaping filter structure; signal flow paths reversal; user specified symbol rate; variable rate interpolation; Application specific integrated circuits; Array signal processing; Filters; Interference; Interpolation; Multiaccess communication; Time division multiple access; Very large scale integration; Wireless communication; Wireless networks;
Conference_Titel :
Custom Integrated Circuits, 1999. Proceedings of the IEEE 1999
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-5443-5
DOI :
10.1109/CICC.1999.777340
