KR102207599B1 - 블록 기반 파고율 저감 - Google Patents
블록 기반 파고율 저감 Download PDFInfo
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Abstract
Description
도 2는 본 발명에 따른 블록 기반 파고율 저감의 소프트웨어 구현을 위한 예시적인 의사 코드(pseudo code)를 예시한다.
도 3은 데이터 블록에 대해 CFR을 수행하는 블록 기반 CFR 스테이지를 예시한다.
도 4는 본 발명의 일 실시에에 따른 블록 처리 CFR을 예시한다.
도 5는 본 발명의 다른 실시예에 따른 블록 처리 CFR을 예시한다.
도 6은 CFR의 하드웨어 구현을 위한 예시적인 블록 기반 피크 검출기 및 펄스 제거기(pulse canceller)를 예시한다.
Claims (32)
- 무선 디바이스로서,
파고율 저감 처리(crest factor reduction processing)를 위해 데이터 스트림과 연관된 데이터 블록을 선택하도록 구성된 처리 회로와,
상기 선택된 데이터 블록을 저장하도록 구성된 메모리와,
상기 메모리에 결합된 기저대역 프로세서를 포함하되, 상기 기저대역 프로세서는,
상기 데이터 블록 내에서 신호 피크(signal peak)를 검출하는 것에 응답하여, 상기 데이터 스트림으로부터의 프리-커서 데이터 블록(pre-cursor data block)을 상기 데이터 블록 앞에 첨부(prepend)하여 결합된 데이터 블록을 생성하고,
상기 결합된 데이터 블록에 파고율 저감(crest-factor reduction: CFR)을 적용하여 상기 결합된 데이터 블록 내에서 상기 신호 피크를 소거(cancel)하고,
상기 결합된 데이터 블록으로부터 상기 프리-커서 데이터 블록을 제거하여 출력 데이터 블록을 생성하도록 구성되는
무선 디바이스.
- 제 1 항에 있어서,
상기 프리-커서 데이터 블록은 상기 데이터 스트림 내에서 상기 데이터 블록 이전에 처리되는 데이터를 포함하는
무선 디바이스.
- 제 1 항에 있어서,
상기 신호 피크는 상기 데이터 블록의 끝 경계에 비해 상기 데이터 블록의 시작 경계에 더 가깝게 배치되는
무선 디바이스.
- 제 1 항에 있어서,
상기 CFR을 적용하기 위해, 상기 기저대역 프로세서는 또한, 상기 데이터 블록의 피크 검색을 수행하여 상기 신호 피크의 위치 및 크기를 결정하도록 구성되고,
상기 신호 피크의 상기 크기는 임계 크기 레벨을 초과하는
무선 디바이스.
- 제 4 항에 있어서,
상기 CFR을 적용하기 위해, 상기 기저대역 프로세서는 또한,
상기 신호 피크에 대응하는 소거 펄스를 생성하고,
상기 소거 펄스를 상기 신호 피크에 적용하여 출력 파형을 생성하도록 구성되는
무선 디바이스.
- 제 5 항에 있어서,
상기 CFR을 적용하기 위해, 상기 기저대역 프로세서는 또한, 클리핑 임계 값을 사용하여 상기 출력 파형을 강제 클리핑(hard-clip)하도록 구성되고,
상기 클리핑 임계 값은 상기 출력 데이터 블록에 대한 원하는 피크 대 평균 비(peak-to-average ratio: PAR)에 기초하는
무선 디바이스.
- 제 5 항에 있어서,
상기 프리-커서 데이터 블록의 폭은 상기 소거 펄스의 폭과 동일한
무선 디바이스.
- 제 1 항에 있어서,
상기 기저대역 프로세서는 또한, 주파수 영역에서 상기 결합된 데이터 블록에 상기 CFR을 적용하도록 구성되는
무선 디바이스.
- 제 1 항에 있어서,
상기 기저대역 프로세서는 또한, 상기 데이터 블록에 대해 상기 CFR을 복수 회 반복적으로 수행하도록 구성되는
무선 디바이스.
- 제 9 항에 있어서,
하나 이상의 안테나와,
상기 출력 데이터 블록에 대응하는 무선 주파수(radio frequency: RF) 신호를 상기 하나 이상의 안테나를 통해 전송하도록 구성된 송신기 회로를 더 포함하는
무선 디바이스.
- 제 1 항에 있어서,
상기 기저대역 프로세서는 또한, 상기 데이터 블록 내에서 상기 신호 피크를 검출하는 것에 응답하여, 상기 데이터 스트림으로부터의 상기 프리-커서 데이터 블록을 상기 데이터 블록 앞에 첨부하고 상기 데이터 스트림으로부터의 포스트-커서 데이터 블록(post-cursor data block)을 상기 데이터 블록 뒤에 첨부(append)하여, 상기 결합된 데이터 블록을 생성하도록 구성되는
무선 디바이스.
- 무선 디바이스로서,
파고율 저감 처리를 위해 데이터 스트림과 연관된 데이터 블록을 선택하도록 구성된 처리 회로와,
상기 선택된 데이터 블록을 저장하도록 구성된 메모리와,
상기 메모리에 결합된 기저대역 프로세서를 포함하되, 상기 기저대역 프로세서는,
상기 데이터 블록 내에서 신호 피크를 검출하고 - 상기 신호 피크는 상기 데이터 블록의 시작 경계와 종료 경계 사이에 있음 -,
상기 데이터 블록 내에서 상기 신호 피크를 검출하는 것에 응답하여, 상기 데이터 스트림으로부터의 포스트-커서 데이터 블록을 상기 데이터 블록 뒤에 첨부하여 결합된 데이터 블록을 생성하고,
상기 결합된 데이터 블록에 파고율 저감(CFR)을 적용하여 상기 결합된 데이터 블록 내에서 상기 신호 피크를 소거하고,
상기 결합된 데이터 블록으로부터 상기 포스트-커서 데이터 블록을 제거하여 출력 데이터 블록을 생성하도록 구성되는
무선 디바이스.
- 제 12 항에 있어서,
상기 포스트-커서 데이터 블록은 상기 데이터 스트림 내에서 상기 데이터 블록에 이어서 처리되는 데이터를 포함하는
무선 디바이스.
- 명령어를 갖는 컴퓨터 판독가능 매체로서,
상기 명령어는 무선 디바이스의 프로세서로 하여금,
데이터 스트림과 연관된 데이터 블록 내에서 신호 피크를 검출하는 것에 응답하여, 상기 데이터 스트림으로부터의 프리-커서 데이터 블록(pre-cursor data block)을 상기 데이터 블록 앞에 첨부하여 결합된 데이터 블록을 생성하는 동작과,
상기 결합된 데이터 블록에 파고율 저감(CFR)을 적용하여 상기 결합된 데이터 블록 내에서 상기 신호 피크를 소거하는 동작과,
상기 결합된 데이터 블록으로부터 상기 프리-커서 데이터 블록을 제거하여 출력 데이터 블록을 생성하는 동작을 수행하게 하도록 구성되는
컴퓨터 판독가능 매체.
- 제 14 항에 있어서,
상기 프리-커서 데이터 블록은 상기 데이터 스트림 내에서 상기 데이터 블록 이전에 처리되는 데이터를 포함하는
컴퓨터 판독가능 매체.
- 제 14 항에 있어서,
상기 신호 피크는 상기 데이터 블록의 끝 경계에 비해 상기 데이터 블록의 시작 경계에 더 가깝게 배치되는
컴퓨터 판독가능 매체.
- 제 14 항에 있어서,
상기 명령어는 또한 상기 프로세서로 하여금, 상기 데이터 블록의 피크 검색을 수행하여 상기 신호 피크의 위치 및 크기를 결정하는 동작을 수행하게 하도록 구성되고,
상기 신호 피크의 상기 크기는 임계 크기 레벨을 초과하는
컴퓨터 판독가능 매체.
- 제 17 항에 있어서,
상기 명령어는 또한 상기 프로세서로 하여금,
상기 신호 피크에 대응하는 소거 펄스를 생성하는 동작과,
상기 소거 펄스를 상기 신호 피크에 적용하여 출력 파형을 생성하는 동작을 수행하게 하도록 구성되는
컴퓨터 판독가능 매체.
- 제 18 항에 있어서,
상기 명령어는 또한 상기 프로세서로 하여금, 클리핑 임계 값을 사용하여 상기 출력 파형을 강제 클리핑하는 동작을 수행하게 하도록 구성되고,
상기 클리핑 임계 값은 상기 출력 데이터 블록에 대한 원하는 피크 대 평균 비(PAR)에 기초하는
컴퓨터 판독가능 매체.
- 제 18 항에 있어서,
상기 프리-커서 데이터 블록의 폭은 상기 소거 펄스의 폭과 동일한
컴퓨터 판독가능 매체.
- 제 14 항에 있어서,
상기 명령어는 또한 상기 프로세서로 하여금, 주파수 영역에서 상기 결합된 데이터 블록에 상기 CFR을 적용하는 동작을 수행하게 하도록 구성되는
컴퓨터 판독가능 매체.
- 제 14 항에 있어서,
상기 명령어는 또한 상기 프로세서로 하여금, 상기 데이터 블록에 대해 상기 CFR을 복수 회 반복적으로 수행하는 동작을 수행하게 하도록 구성되는
컴퓨터 판독가능 매체.
- 제 14 항에 있어서,
상기 명령어는 또한 상기 프로세서로 하여금, 상기 데이터 블록 내에서 상기 신호 피크를 검출하는 것에 응답하여, 상기 데이터 스트림으로부터의 상기 프리-커서 데이터 블록을 상기 데이터 블록 앞에 첨부하고 상기 데이터 스트림으로부터의 포스트-커서 데이터 블록을 상기 데이터 블록 뒤에 첨부하여, 상기 결합된 데이터 블록을 생성하는 동작을 수행하게 하도록 구성되는
컴퓨터 판독가능 매체.
- 명령어를 갖는 컴퓨터 판독가능 매체로서,
상기 명령어는 무선 디바이스의 프로세서로 하여금,
데이터 스트림과 연관된 데이터 블록 내에서 신호 피크를 검출하는 동작 - 상기 신호 피크는 상기 데이터 블록의 시작 경계와 종료 경계 사이에 있음 - 과,
상기 데이터 블록 내에서 상기 신호 피크를 검출하는 것에 응답하여, 상기 데이터 스트림으로부터의 포스트-커서 데이터 블록을 상기 데이터 블록 뒤에 첨부하여 결합된 데이터 블록을 생성하는 동작과,
상기 결합된 데이터 블록에 파고율 저감(CFR)을 적용하여 상기 결합된 데이터 블록 내에서 상기 신호 피크를 소거하는 동작과,
상기 결합된 데이터 블록으로부터 상기 포스트-커서 데이터 블록을 제거하여 출력 데이터 블록을 생성하는 동작을 수행하게 하도록 구성되는
컴퓨터 판독가능 매체.
- 제 24 항에 있어서,
상기 포스트-커서 데이터 블록은 상기 데이터 스트림 내에서 상기 데이터 블록에 이어서 처리되는 데이터를 포함하는
컴퓨터 판독가능 매체.
- 무선 디바이스로서,
데이터 스트림과 연관된 데이터 블록 내에서 신호 피크를 검출하는 것에 응답하여, 상기 데이터 스트림으로부터의 프리-커서 데이터 블록(pre-cursor data block)을 상기 데이터 블록 앞에 첨부하여 결합된 데이터 블록을 생성하는 수단과,
상기 결합된 데이터 블록에 파고율 저감(CFR)을 적용하여 상기 결합된 데이터 블록 내에서 상기 신호 피크를 소거하는 수단과,
상기 결합된 데이터 블록으로부터 상기 프리-커서 데이터 블록을 제거하여 출력 데이터 블록을 생성하는 수단을 포함하는
무선 디바이스.
- 블록 기반 파고율 저감 방법으로서,
파고율 저감 처리를 위해 데이터 블록을 선택하는 단계와,
프리-커서 데이터 블록을 식별하는 단계 - 상기 프리-커서 데이터 블록은 상기 데이터 블록의 이전에 있는 데이터를 포함함 - 와,
상기 데이터 블록 내에서 신호 피크를 검출하는 것에 응답하여, 상기 프리-커서 데이터 블록을 상기 데이터 블록 앞에 첨부하여 확장된 데이터 블록을 생성하는 단계와,
상기 확장된 데이터 블록을 파고율 저감 처리에 인가하여 상기 확장된 데이터 블록 내에서 상기 신호 피크를 소거하는 단계와,
상기 파고율 저감 처리로부터 처리된 데이터 블록을 제공하는 단계를 포함하는
블록 기반 파고율 저감 방법.
- 제 27 항에 있어서,
상기 확장된 데이터 블록은 포스트-커서 데이터 블록을 포함하고, 상기 포스트-커서 데이터 블록은 상기 데이터 블록의 이후에 있는 데이터를 포함하는
블록 기반 파고율 저감 방법.
- 무선 디바이스로서,
파고율 저감 처리를 위해 데이터 스트림과 연관된 데이터 블록을 선택하도록 구성된 처리 회로와,
상기 선택된 데이터 블록을 저장하도록 구성된 메모리와,
상기 메모리에 결합된 기저대역 프로세서를 포함하되, 상기 기저대역 프로세서는,
프리-커서 데이터 블록을 식별하고 - 상기 프리-커서 데이터 블록은 상기 데이터 블록의 이전에 있는 데이터를 포함함 -,
상기 데이터 블록 내에서 신호 피크를 검출하는 것에 응답하여, 상기 프리-커서 데이터 블록을 상기 데이터 블록 앞에 첨부하여 확장된 데이터 블록을 생성하고,
상기 확장된 데이터 블록을 파고율 저감 처리에 인가하여 상기 확장된 데이터 블록 내에서 상기 신호 피크를 소거하고,
상기 파고율 저감 처리로부터 처리된 데이터 블록을 제공하도록 구성되는
무선 디바이스.
- 제 29 항에 있어서,
상기 확장된 데이터 블록은 포스트-커서 데이터 블록을 포함하고, 상기 포스트-커서 데이터 블록은 상기 데이터 블록의 이후에 있는 데이터를 포함하는
무선 디바이스.
- 명령어를 갖는 컴퓨터 판독가능 매체로서,
상기 명령어는 무선 디바이스의 프로세서로 하여금 블록 기반 파고율 저감 방법을 수행하게 하도록 구성되고,
상기 블록 기반 파고율 저감 방법은,
파고율 저감 처리를 위해 데이터 블록을 선택하는 단계와,
프리-커서 데이터 블록을 식별하는 단계 - 상기 프리-커서 데이터 블록은 상기 데이터 블록의 이전에 있는 데이터를 포함함 - 와,
상기 데이터 블록 내에서 신호 피크를 검출하는 것에 응답하여, 상기 프리-커서 데이터 블록을 상기 데이터 블록 앞에 첨부하여 확장된 데이터 블록을 생성하는 단계와,
상기 확장된 데이터 블록을 파고율 저감 처리에 인가하여 상기 확장된 데이터 블록 내에서 상기 신호 피크를 소거하는 단계와,
상기 파고율 저감 처리로부터 처리된 데이터 블록을 제공하는 단계를 포함하는
컴퓨터 판독가능 매체.
- 제 31 항에 있어서,
상기 확장된 데이터 블록은 포스트-커서 데이터 블록을 포함하고, 상기 포스트-커서 데이터 블록은 상기 데이터 블록의 이후에 있는 데이터를 포함하는
컴퓨터 판독가능 매체.
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KR1020147014136A Withdrawn KR20140084290A (ko) | 2011-10-27 | 2012-10-26 | 디지털 전치 왜곡(dpd) 및 다른 비선형 애플리케이션을 위해 사용자 정의의 비선형 함수와 함께 명령어 집합을 갖는 프로세서 |
KR1020147014118A Abandoned KR20140092852A (ko) | 2011-10-27 | 2012-10-26 | Fir 필터링을 위한 벡터 콘볼루션 함수와 함께 명령어 집합을 갖는 벡터 프로세서 |
KR1020147014151A Active KR102001570B1 (ko) | 2011-10-27 | 2012-10-26 | 소프트웨어 디지털 프론트 엔드(SoftDFE) 신호 처리 |
KR1020147014146A Active KR102015680B1 (ko) | 2011-10-27 | 2012-10-26 | 최대 가능도 비트-스트림 엔코딩을 이용한 직접 디지털 합성 |
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KR1020147014136A Withdrawn KR20140084290A (ko) | 2011-10-27 | 2012-10-26 | 디지털 전치 왜곡(dpd) 및 다른 비선형 애플리케이션을 위해 사용자 정의의 비선형 함수와 함께 명령어 집합을 갖는 프로세서 |
KR1020147014118A Abandoned KR20140092852A (ko) | 2011-10-27 | 2012-10-26 | Fir 필터링을 위한 벡터 콘볼루션 함수와 함께 명령어 집합을 갖는 벡터 프로세서 |
KR1020147014151A Active KR102001570B1 (ko) | 2011-10-27 | 2012-10-26 | 소프트웨어 디지털 프론트 엔드(SoftDFE) 신호 처리 |
KR1020147014146A Active KR102015680B1 (ko) | 2011-10-27 | 2012-10-26 | 최대 가능도 비트-스트림 엔코딩을 이용한 직접 디지털 합성 |
KR1020147014067A Active KR102063140B1 (ko) | 2011-10-27 | 2012-10-26 | 블록 기반 파고율 저감 |
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