The pan-European mobile radio system: Part I
The pan-European mobile radio system: Part I
Following the launch of the Pan-European digital mobile radio (GSM) system its salient features are summarised in this tutorial review [I, 8]. Time Division Multiple Access (TDMA) with eight users per carrier is used at a multi-user rate of 27.1 kbit/s, demanding a channel equaliser to combat dispersion. The error protected chip-rate of the full-rate traffic channels is 22.8 kbit/s, while in half-rate channels is 11.4 kbit/s. There are two speech traffic channels, five different-rate data traffic channels and 14 various control and signalling channels to support the system's operation. A moderately complex, 13 kbit/s Regular Pulse Excited speech codec with long term predictor (LTP) is used, combined with an embedded three-class error correction codec and multi-layer interleaving to provide sensitivity-matched unequal error protection for the speech bits. An overall speech delay of 57.5 ms is maintained. Slow frequency hopping at 217 hops/s yields substantial performance gains for slowly moving pedestrians.
245-260
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1
Steele, R.
7b1e6d15-a296-43bc-8ff2-37fbeb71b0ae
March 1994
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1
Steele, R.
7b1e6d15-a296-43bc-8ff2-37fbeb71b0ae
Hanzo, L. and Steele, R.
(1994)
The pan-European mobile radio system: Part I.
European Transactions on Communications, 5 (2), .
(doi:10.1002/ett.4460050216).
Abstract
Following the launch of the Pan-European digital mobile radio (GSM) system its salient features are summarised in this tutorial review [I, 8]. Time Division Multiple Access (TDMA) with eight users per carrier is used at a multi-user rate of 27.1 kbit/s, demanding a channel equaliser to combat dispersion. The error protected chip-rate of the full-rate traffic channels is 22.8 kbit/s, while in half-rate channels is 11.4 kbit/s. There are two speech traffic channels, five different-rate data traffic channels and 14 various control and signalling channels to support the system's operation. A moderately complex, 13 kbit/s Regular Pulse Excited speech codec with long term predictor (LTP) is used, combined with an embedded three-class error correction codec and multi-layer interleaving to provide sensitivity-matched unequal error protection for the speech bits. An overall speech delay of 57.5 ms is maintained. Slow frequency hopping at 217 hops/s yields substantial performance gains for slowly moving pedestrians.
Text
lh-rs-ETC-part1-mar1994.pdf
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Published date: March 1994
Organisations:
Southampton Wireless Group
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Local EPrints ID: 251372
URI: http://eprints.soton.ac.uk/id/eprint/251372
PURE UUID: 88c3f9c2-2566-4d00-be8e-445f63277ad6
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Date deposited: 08 Dec 1999
Last modified: 18 Mar 2024 02:32
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Author:
L. Hanzo
Author:
R. Steele
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