Abstract
A hybrid ARQ retransmission method in a communication system wherein data packets consisting of symbols encoded with a forward error correction (FEC) technique prior to transmission are retransmitted based on an automatic repeat request and subsequently combined with previously received data packets either on a symbol by symbol or a bit to bit basis the symbols of said data packets being modulated by a mapping unit employing a predetermined signal constellation. Each symbol bit has a mean bit reliability defined by the individual bit reliability level over all symbols of the predetermined signal constellation. The retransmitted data packets being retransmitted in form of a selected one of a plurality of different redundancy versions. According to the invention the transmitted bits of the modulated symbols are reordered over the retransmissions in accordance with the selected redundancy version such that the combined mean bit reliabilities for the respective bits are averaged out.
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| 3G | 08/12/2005 | ISLD-200601-003 | PANASONIC CORP | Yes | Family Member | ||||
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Technologies
Signal Processing
Product
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Wireless communication
Services
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