Radio communication system

Details Radio communication system Radio communication system

2005-06-14

2005-06-14

Marcelo, Melvin (Department: 2662)

Multiplex communications

Communication over free space

Combining or distributing information via time channels

C370S525000, C455S515000

Reexamination Certificate

active

06907027

ABSTRACT:
The invention relates to a radio communication system in which a time slot of a frame of a multiframe signal allocated to the frequency control channel is modulated using an 8PSK modulation scheme to contain a tone having a frequency which GMSK modulation is unsuited to generate. This enables COMPACT-format signals to be distinguished from GSM-format signals and ensures backwards compatibility with all existing GSM mobile stations.

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patent: 0507384 (1992-10-01), None
patent: WO99/39484 (1999-08-01), None
Balachandran K. et al., “A proposal for EGPRS radio link control using link adaptation and incremental redundancy”, Bell Labs Technical Journal, Jul.-Sep. 1999, Lucent Technologies, USA, vol. 4, No. 3, pp. 19-36.

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