A single chip PHY COFDM modem for IEEE 802.11a with integrated ADCs and DACs

Philip Ryan, Thangadurai Arivoli, Ludovico De Souza, Gordon Foyster, Richard Keaney, Tom McDermott, Alireza Moini, Said Al-Sarawi, Uri Parker, Geoff Smith, Neil Weste, Greg Zyner

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


A single chip PHY coded orthogonal frequency domain multiplexing (COFDM) modem with integrated analog to digital converters (ADC) and digital to analog converters (DAC) was discussed. IEEE 802.11a standard was used which provided for wireless local area networks. The PHY modem was responsible for demodulating and modulating a baseband analog signal with data from medium access controller (MAC). Baseband signals transmitted in a 802.11a system consisted of packets composed of a preamble followed by OFDM symbols. Preamble was used by the receiver for synchronization. OFDM symbols were separated by guard intervals which were generated by cyclically extending and windowing the OFDM symbols.

Original languageEnglish
Pages (from-to)338-339
Number of pages2
JournalDigest of Technical Papers - IEEE International Solid-State Circuits Conference
Publication statusPublished - 2001
Externally publishedYes


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