Title:
SOFT DECISION DECODING DEVICE AND RADIO COMMUNICATION EQUIPMENT
Document Type and Number:
Japanese Patent JP3827588
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a soft decision decoding device capable of easily calculating bit likelihood by a small-scaled arithmetic processing circuit and providing a reproduction signal whose bit error rate characteristics are satisfactory, and radio communication equipment having the device.
SOLUTION: A bit likelihood generating part 3 generates soft decision bit data bit from phase likelihood iphs calculated by an information data phase likelihood generating part 4, a bit weighting factor k calculated by a bit weighting part 9, and a bit string pbit of a phase selected symbol, and a multiplying part 13 multiplies the soft decision bit data bit and frame likelihood data fkphs to calculate soft decision bit data fbit (k) with frame likelihood. A soft decision viterbi decoder 6 applies soft decision viterbi-decoding to the soft decision bit data fbit (k) with the frame likelihood.
Inventors:
Susumu Furushima
Application Number:
JP2002042867A
Publication Date:
September 27, 2006
Filing Date:
February 20, 2002
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
G06F11/10; H04L27/22; H03M13/23; H03M13/25; H03M13/45; H04B3/06; H04B7/005; H04L1/00; (IPC1-7): H04L27/22; G06F11/10; H03M13/23; H03M13/45; H04B3/06; H04B7/005; H04L1/00
Domestic Patent References:
| JP4219028A | ||||
| JP2000216835A | ||||
| JP2002198826A | ||||
| JP2002314436A |
Attorney, Agent or Firm:
Masataka Nihei
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