비트 대칭 그레이 코드로 변조된 수신 심볼 신호를 비트 정보로 분할하는 방법 및 그 장치
김대호, 박형숙, 손경열, 유창완, 현광민, 방영조, 방승재, 박윤옥, 윤동원, 김준우
- 8559566 (2013.10.15)
- Disclosed is a method and apparatus for composing a received symbol signal modulated with a bit reflected Gray code into bit information. According to an embodiment of the present invention, a positive integer of the received symbol signal having bits is assigned according to the Gray mapping rule, and a sign is determined. A value that is indicative of an arrangement of the bits constituting the received symbol signal is calculated. A boundary value in at least one bit group consisting of the bits constituting the received symbol signal is acquired, and a difference from an absolute value of the received symbol signal is calculated. The received symbol signal is converted into information per bit using a value of the received symbol signal based on the positive integer and the determined sign, the value that is indicative of the bit arrangement, and the difference from the absolute value. Therefore, it is possible to reduce complexity in bitwise decomposition for an iterative decoder inevitably used in a receiver.
- KSP 제안 키워드
- Absolute value, Gray mapping, Iterative decoder, Mapping rule, boundary value, gray code, signal based