Title :
An adaptive 2.4 GHz low-IF receiver in 0.6 /spl mu/m CMOS for wideband wireless LAN
Author :
Behbahani, F. ; Leete, J. ; Weeguan Tan ; Kishigami, Yuuki ; Karimi-Sanjaani, A. ; Roithmeier, A. ; Hoshino, Kenji ; Abidi, Abdessalem
Author_Institution :
Integrated Circuits & Syst. Lab., California Univ., Los Angeles, CA, USA
Abstract :
High bit-rate communications require wideband channels and complex modulation schemes, such as QAM, to convey multiple bits per symbol. Available bandwidth (BW) and desired user density per cell together determine the BW allocated per channel. In short-range applications like indoor wireless LAN where transmitted power is limited to 1 mW, FCC rules allow channel BW higher than 1 MHz. This system adapts to channel bandwidths ranging from 0.625 MHz to 10 MHz, and modulations spanning 4-QAM to 64-QAM. The carrier frequency is slowly hopped across the 2.4 GHz ISM band.
Keywords :
CMOS integrated circuits; UHF integrated circuits; indoor radio; quadrature amplitude modulation; radio receivers; wireless LAN; 0.6 micron; 0.625 to 10 MHz; 2.4 GHz; CMOS; FCC rules; ISM band; QAM; carrier frequency; channel bandwidths; complex modulation schemes; high bit-rate communications; indoor wireless LAN; low-IF receiver; short-range applications; transmitted power; user density per cell; wideband channels; wideband wireless LAN; Noise measurement; Radio frequency; Solid state circuits; Wideband; Wireless LAN;
Conference_Titel :
Solid-State Circuits Conference, 2000. Digest of Technical Papers. ISSCC. 2000 IEEE International
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-5853-8
DOI :
10.1109/ISSCC.2000.839725
