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Error Protection for ATM-Based Wireless Networking Systems

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Overview Variable rate error protection is required to support the broad range of quality of service (QoS) requirements for multimedia services in future Asynchronous Transfer Mode (ATM)-based wireless networking systems known as wireless ATM (WATM). In this paper, the performance of a rate-compatible punctured convolution (RCPC) coding scheme is examined. It provides adaptive forward error correction (FEC) at the physical (PHY) layer of the (non-ATM) wireless access segment, that interworks with the fixed ATM transport network. Bit error rate (BER) performance of the RCPC codes is evaluated for a range of wireless protocol data unit (PDU) formats. The through- put is also compared with well known Bose-Chaudhuri-Hocquenghem (BCH) and Reed-Solomon (RS) block codes. An hybrid automatic repeat request (ARQ)/FEC protocol that uses RCPC coding to diatribe error protection between the wireless PHY and data link control (DLC) layers is also presented. Issues relating to complexity/cost trade-offs, and effects of multipath fading, require further study.

Further White Paper Details
Publisher	Telcordia Technologies	File Format	PDF, requires Acrobat Rdr 5
Date Published	June 1999	Downloads	1
Format	White Papers
Topics	WAP, Quality of Service, ATM

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