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A single chip PHY COFDM modem for IEEE 802.11a with integrated ADCs and DACs
- Source :
- Scopus-Elsevier
- Publication Year :
- 2002
- Publisher :
- IEEE, 2002.
-
Abstract
- This chip, fabricated in a 0.25/spl mu/m 5M1P CMOS process with 3.7M transistors, implements a fully-compliant IEEE 802.11a PHY modem. The IEEE 802.11a standard provides for wireless local area networks (WLANs) with a physical layer based on coded orthogonal frequency domain multiplexing (COFDM) modulation, delivering data rates up to 54Mb/s, operating in the 5GHz UNII frequency bands. The article outlines the role of a physical layer (PHY) modem in such a WLAN system. The PHY modem lies between a medium access controller (MAC) and a 5GHz radio transceiver, and is responsible for demodulating and modulating a baseband analog signal with data from the MAC. In 802.11a the baseband signal is a 64 subcarrier COFDM signal with BPSK, QPSK, QAM16 or QAM64 modulated subcarriers.
Details
- Database :
- OpenAIRE
- Journal :
- 2001 IEEE International Solid-State Circuits Conference. Digest of Technical Papers. ISSCC (Cat. No.01CH37177)
- Accession number :
- edsair.doi.dedup.....f8adc603c17509868836fd221fbfbd14