Abstract
A method and apparatus allow for reliable and low-complexity decoding of EGPRS2 communication bursts when RTTI and BTTI equipment operate on the same timeslot(s). Various configurations for the Uplink State Flag (USF) mapping employ adjustable bit swapping of some or all USF channel-coded bits in communication bursts. Configurations that allow for an adjustable use of the symbol mapping stage in the transmitter and receiver to allow for more throughput and/or reduced complexity are also disclosed. Admissible mapping rules are known to the receiver and transmitter and therefore reduce the complexity of decoding this information. In order to increase throughput for EGPRS2 communication bursts RTTI transmissions of different modulation types or EGPRS/EGPRS2 modulation and coding schemes during a BTTI interval are introduced that allow for reliable USF decoding and reduced decoder complexity.
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