전자공학회논문지C (Journal of the Korean Institute of Telematics and Electronics C)
- 제34C권8호
- /
- Pages.1-7
- /
- 1997
- /
- 1226-5853(pISSN)
직접 확산 통신을 위한 기저 대역 MODEM의 VLSI 구현
A VLSI implementation of base band MODEM for direct-sequence spread spectrum communication
- Kim, Geon (Pantech Co., Ltd.) ;
- Cho, Joong-Hwee (Dept. of Electronics Eng., Univ. of Inchon)
- 발행 : 1997.08.01
초록
In tis paper, w eproposed a modeling for direct-sequence spread communication base band modem in RT-level VHDL and implemented in a one-chip VLSI and tested. The transmitter modulates with DQPSK modulation method and spreads a modulated signal with 32-bit PN code into 1.152MHz. The receiver de-spreads a signal using 32-tap matched filter and recovers with DQPSK demodulation method. The digital frequency synthesizer generates the sine signal and the cosine signal of 2.304MHz with ROM tables in the size of 7
키워드