Title:
MULTICARRIER TRANSMITTER, MULTICARRIER RECEIVER, AND MULTICARRIER TRANSMITTING METHOD
Document Type and Number:
Japanese Patent JP3679775
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To improve an error rate characteristic caused by retransmission in a multicarrier communication mode.
SOLUTION: A series converter 104 exchanges upper bits which hardly undergo errors and lower bits which easily undergo errors to be used by a multi-valued modulator 105 during each retransmission. The multi-valued modulator 105 performs multi-valued modulating operation with use of the upper and lower bits exchanged during each transmission. A symbol after subjected to the multi-valued demodulation is interleaved with different interleave patterns during each retransmission and transmitted on the multicarrier via a diffuser 108 and an OFDM transmitter 109.
Inventors:
Atsushi Matsumoto
Kenichi Miyoshi
Kenichi Miyoshi
Application Number:
JP2002111171A
Publication Date:
August 03, 2005
Filing Date:
April 12, 2002
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
H04L1/00; H04B1/707; H04B7/02; H04J11/00; H04J13/00; H04W16/28; H04W28/04; H04W72/04; H04W88/02; (IPC1-7): H04J11/00; H04B1/707; H04L1/00
Domestic Patent References:
| JP2000201132A | ||||
| JP2001060934A | ||||
| JP200031944A |
Other References:
Enhanced HARQ Method with Signal Constellation Rearrangement,3GPP,TSG-RAN Working Group 1 Meeting #19 TSGR1#19(01)0237,2001年 3月 2日,p.1-11
Attorney, Agent or Firm:
Koichi Washida
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