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Performance of GPRS coding scheme detection under severe multipath and co-channel interference as a function of soft-bit width

Sherratt, R. S. (2003) Performance of GPRS coding scheme detection under severe multipath and co-channel interference as a function of soft-bit width. In: WCNC 2003: IEEE Wireless Communications and Networking Conference Record, Vols 1-3. IEEE Wireless Communications and Networking Conference. IEEE, pp. 801-805. ISBN 0780377001

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Abstract/Summary

The General Packet Radio Service (GPRS) has been developed for the mobile radio environment to allow the migration from the traditional circuit switched connection to a more efficient packet based communication link particularly for data transfer. GPRS requires the addition of not only the GPRS software protocol stack, but also more baseband functionality for the mobile as new coding schemes have be en defined, uplink status flag detection, multislot operation and dynamic coding scheme detect. This paper concentrates on evaluating the performance of the GPRS coding scheme detection methods in the presence of a multipath fading channel with a single co-channel interferer as a function of various soft-bit data widths. It has been found that compressing the soft-bit data widths from the output of the equalizer to save memory can influence the likelihood decision of the coding scheme detect function and hence contribute to the overall performance loss of the system. Coding scheme detection errors can therefore force the channel decoder to either select the incorrect decoding scheme or have no clear decision which coding scheme to use resulting in the decoded radio block failing the block check sequence and contribute to the block error rate. For correct performance simulation, the performance of the full coding scheme detection must be taken into account.

Item Type:Book or Report Section
Divisions:Faculty of Life Sciences > School of Biological Sciences > Department of Bio-Engineering
ID Code:14452
Uncontrolled Keywords:GPRS, coding scheme detect, multipath, co-channel interference
Additional Information:Proceedings Paper IEEE Wireless Communications and Networking Conference MAR 16-20, 2003 NEW ORLEANS, LA
Publisher:IEEE

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