Title:
【発明の名称】デジタル伝送システムにおける伝送チャネルでのデータ伝送のための方法
Document Type and Number:
Japanese Patent JP3222449
Kind Code:
B2
Abstract:
In a method for data transmission on transmission channels in a digital transmission system, turbo coding is carried out in a turbo coder at a transmitter end for channel coding, and turbo decoding with soft-decision output signals is carried out in a turbo decoder at the receiver end. In order to improve the quality of service, the quality of service is determined from the variances of the soft-output signals at the turbo decoder, and the coding rate is set by adaptation of the puncturing such that a predetermined quality of service is obtained. Alternatively, the number of decoding iterations is set as a function of the quality of service. If a MAP symbol assessor is used at the receiver end, the variances sigma2LLR of the soft-decision output signals from the turbo decoder are determined, and the bit error rate is calculated from the variances sigma2LLR as a measure of the quality of service.
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Inventors:
Marx Daychu
Jörg Prehinger
Peter Jung
Fleet belt berrens
Jörg Prehinger
Peter Jung
Fleet belt berrens
Application Number:
JP2000508156A
Publication Date:
October 29, 2001
Filing Date:
July 29, 1998
Export Citation:
Assignee:
Siemens Aktiengesellschaft
International Classes:
H03M13/23; H03M13/13; H03M13/29; H03M13/35; H03M13/41; H03M13/45; H04L1/00; H04L1/20; (IPC1-7): H03M13/29; H03M13/41; H03M13/45; H04L1/00; H04L1/20
Attorney, Agent or Firm:
Toshio Yano (4 outside)