Invention Grant
- Patent Title: Data transmission apparatus using a constellation rearrangement
- Patent Title (中): 使用星座重排的数据传输装置
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Application No.: US11003437Application Date: 2004-12-06
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Publication No.: US07693179B2Publication Date: 2010-04-06
- Inventor: Alexander Golitschek , Christian Wengerter , Michael Philipp Schmitt , Eiko Seidel
- Applicant: Alexander Golitschek , Christian Wengerter , Michael Philipp Schmitt , Eiko Seidel
- Applicant Address: JP Osaka
- Assignee: Panasonic Corporation
- Current Assignee: Panasonic Corporation
- Current Assignee Address: JP Osaka
- Agency: Dickinson Wright, PLLC
- Main IPC: H04J3/16
- IPC: H04J3/16 ; H04J3/22 ; G08C25/02 ; H04L1/18

Abstract:
A hybrid ARQ retransmission method involves encoding data packets with a forward error correction (FEC) technique prior to transmission. The data packets are re-transmitted based on an automatic repeat request (ARQ) and subsequently soft-combined with previously received erroneous data packets either on a symbol-by-symbol or a bit-by-bit basis. The symbols of the erroneous data packets are modulated by employing a first signal constellation. The symbols of the re-transmitted data packets are modulated by employing at least a second signal constellation. Each symbol bit has a mean bit reliability defined by the individual bit reliabilities over all symbols of the predetermined signal constellation. The first constellation and the at least second signal constellation are selected such that the combined mean bit reliabilities for the respective bits of all transmissions are averaged out.
Public/Granted literature
- US20050097425A1 Data transmission apparatus using a constellation rearrangement Public/Granted day:2005-05-05
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