Title :
A fully-integrated, digital, direct sequence, spread spectrum modem ASIC
Author_Institution :
Stanford Telecom, Santa Clara, CA, USA
Abstract :
Spread spectrum modulation has become very popular due to the FCC allocations in three ISM bands, e.g. 902-928 MHz. The paper describes a single ASIC which digitally implements the down conversion, matched filter, DPSK detection, and AFC functions of a demodulator as well as the differential encoding, PN spreading, and PSK modulation functions of a transmitter. This ASIC performs virtually all the functions required by a direct sequence spread spectrum modem
Keywords :
application specific integrated circuits; digital filters; digital radio systems; frequency convertors; matched filters; modems; phase shift keying; radiofrequency filters; spread spectrum communication; transceivers; 902 to 928 MHz; AFC functions; ASIC; DPSK detection; DS-SS modem; FCC allocations; PN spreading; PSK modulation functions; UHF; automatic frequency control; demodulator; differential encoding; differential phase shift keying; down conversion; fully-integrated digital direct sequence spread spectrum modem; matched filter; pseudonoise; spread spectrum modulation; transmitter; Application specific integrated circuits; Automatic frequency control; Demodulation; Differential quadrature phase shift keying; Encoding; FCC; Matched filters; Modems; Phase shift keying; Spread spectrum communication;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 1992. Proceedings, PIMRC '92., Third IEEE International Symposium on
Conference_Location :
Boston, MA
Print_ISBN :
0-7803-0841-7
DOI :
10.1109/PIMRC.1992.279966
