Development of an OFDM based high speed wireless LAN platform using the TI C6x DSP

MF Tariq, T Baltaci, TR Horseman, MRG Butler, AR Nix

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

20 Citations (Scopus)
389 Downloads (Pure)

Abstract

Coded orthogonal frequency division multiplexing (COFDM) is currently specified in all three of the world's 5 GHz wireless LAN standards (HIPERLAN/2, IEEE 802.11a and MMAC HiSWANa). This technology was chosen due to its robustness at high data rates in a frequency selective multipath channel. Each standard operates using adaptive subband quadrature amplitude modulation (QAM) and offers a maximum data rate of 54 Mbits/s over a 20 MHz channel. This paper describes a real-time DSP implementation of an asynchronous OFDM based high speed WLAN system. The software reconfigurable OFDM based platform is developed around the Texas Instruments fixed point TMS320C6201 DSP. The physical layer DSP performance is evaluated and compared for an indoor channel against floating point C++ based simulations. Data throughput and complexity estimates are generated from the resulting hardware platform. Finally, a video based communications application is developed to operate over the demonstrator. Results indicate that the fixed point DSP solution can operate within 0.5 dB of the floating point simulation in an AWGN channel. For the indoor fading channel, an implementation loss of around 2.5 dB was observed
Translated title of the contributionDevelopment of an OFDM based high speed wireless LAN platform using the TI C6x DSP
Original languageEnglish
Title of host publicationIEEE International Conference on Communications, 2002 (ICC 2002), New York
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages522 - 526
Number of pages5
Volume1
ISBN (Print)0780374002
DOIs
Publication statusPublished - Apr 2002
EventInternational Conference on Communications (ICC) - New York, United States
Duration: 1 Apr 2002 → …

Conference

ConferenceInternational Conference on Communications (ICC)
CountryUnited States
CityNew York
Period1/04/02 → …

Bibliographical note

Rose publication type: Conference contribution

Sponsorship: The authors would like to thank Rob Heaton and Paul Ratliff from Mitsubishi Electric ITE-VIL United Kingdom for their valuable input and support of this work

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Keywords

  • IEEE 802.11a
  • Hiperlan/2
  • WLAN
  • COFDM
  • 5 GHz

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