A fast-acquisition demodulation scheme for 2.4 GHz wireless DSSS transceiver VLSI

Author

Lee, Hua-Chin ; Tzou, Chin-Kae ; Wang, Chorng-Kuang ; Dan, Viggen

Author_Institution

Dept. of Electr. Eng., Nat. Central Univ., Chung-Li, Taiwan

fYear

1999

fDate

1999

Firstpage

227

Lastpage

230

Abstract

In this paper, a CMOS cell based system VLSI design for Direct-Sequence Spread-Spectrum (DSSS) wireless LAN transceiver is presented. In addition, an efficient and fast-acquisition demodulation scheme is proposed to use in the receiver architecture. Implementation and testing results are also given. The proposed demodulation scheme can help to positively combine the received signal energy of multipaths so that the detection performance is improved by 3 dB in a typical frequency-selective indoor wireless communication environment. The proposed architecture can synchronize the PN code in 30 μs and the chip size is 5600×4600 μm². It can be operated from 3.3 V to 5 V and the power consumption ranges from 189 mW to 250 mW respectively

Keywords

CMOS digital integrated circuits; VLSI; demodulation; digital signal processing chips; indoor radio; integrated circuit design; integrated circuit testing; low-power electronics; matched filters; pseudonoise codes; quadrature phase shift keying; spread spectrum communication; synchronisation; transceivers; wireless LAN; 0.6 mum; 189 to 250 mW; 2.4 GHz; 3.3 to 5 V; 30 mus; CMOS cell based system VLSI design; COMPASS standard cell library; DQPSK demodulator; PN code synchronization; chip size; detection performance; direct-sequence spread-spectrum wireless LAN transceiver; fast-acquisition demodulation scheme; frequency-selective indoor wireless communication environment; matched filter; power consumption; received multipath signal energy; receiver architecture; testing results; Automatic frequency control; Demodulation; Matched filters; Modulation coding; Spread spectrum communication; Timing; Transceivers; Transmitters; Very large scale integration; Wireless LAN;

fLanguage

English

Publisher

ieee

Conference_Titel

VLSI Technology, Systems, and Applications, 1999. International Symposium on

Conference_Location

Taipei

ISSN

1524-766X

Print_ISBN

0-7803-5620-9

Type

conf

DOI

10.1109/VTSA.1999.786041

Filename

786041