Title :
1:N interpolation FIR filter design for SSB/BPSK-DS/CDMA
Author :
Kim, Myung-Soon ; Kim, Dae-Ik ; Jin-Gyun Chung ; Lim, Myung-Sub
Author_Institution :
Div. of Electron. & Inf. Eng., Chonbuk Nat. Univ., Chonju, South Korea
Abstract :
In this paper, an efficient pulse shaping filter architecture for SSB/BPSK-DS/CDMA is proposed. The filter satisfies the specifications in 1S-95. The proposed architecture is based on polyphase decomposition and look-up table method. By exploiting the linear phase property of the decomposed filter coefficients, the chip area required for the look-up table can be reduced by half compared with the conventional methods. By Synopsys simulations, it is shown that the use of the proposed method can result in reduction in the number of gates by 43%
Keywords :
FIR filters; application specific integrated circuits; code division multiple access; digital filters; interference suppression; interpolation; intersymbol interference; phase shift keying; pulse shaping circuits; table lookup; ASIC; IS-95 specifications; ISI suppression; SSB/BPSK-DS/CDMA; Synopsys simulations; chip area reduction; decomposed filter coefficients; interpolation FIR filter design; linear phase property; lookup table method; polyphase decomposition; pulse shaping filter architecture; Amplitude modulation; Design methodology; Electronic circuits; Finite impulse response filter; Interpolation; Multiaccess communication; Nonlinear filters; Pulse shaping methods; Table lookup; Transversal filters;
Conference_Titel :
ASICs, 2000. AP-ASIC 2000. Proceedings of the Second IEEE Asia Pacific Conference on
Conference_Location :
Cheju
Print_ISBN :
0-7803-6470-8
DOI :
10.1109/APASIC.2000.896955
