Title:
重要度の小さいデータ・ビットを使用して重要なデータ・ビットを保護する方法
Document Type and Number:
Japanese Patent JP4215947
Kind Code:
B2
Abstract:
A method and apparatus for protecting a first group of data bits using a second group of data bits within digital data transmissions is disclosed. First and second groups of data bits are encoded for transmission in a communication network. The second group of encoded data bits are scrambled using a scrambling mask generated from the first group of data bits. The first group of encoded data bits and the second group of encoded and scrambled data bits are then interleaved and transmitted to a receiver. The first group of data bits are decoded and used to regenerate the scrambling mask to descramble the second group of encoded and scrambled data bits. The second group of data bits may then be decoded. The results of the decoding of the second group of data bits are used to determine whether or not the first group of data bits were properly decoded.
Inventors:
Dent, Paul, W
Application Number:
JP2000515354A
Publication Date:
January 28, 2009
Filing Date:
September 30, 1998
Export Citation:
Assignee:
ERICSSON INC.
International Classes:
H03M13/23; H03M13/27; H04L1/00; H04L1/20; H04L25/03
Domestic Patent References:
| JP6292161A | ||||
| JP8130535A |
Foreign References:
| US5493584 | ||||
| US5666370 | ||||
| US5517511 |
Attorney, Agent or Firm:
Yoshiyuki Inaba
Shinji Oga
Toshifumi Onuki
Shinji Oga
Toshifumi Onuki