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특허 상세정보

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내보내기 페이스북 공유 카카오톡 공유

Method, apparatus and system for decoding a non-coherently demodulated signal

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) H04B-001/69    H04B-001/707    H04J-013/04   
미국특허분류(USC) 375/200 ; 375/205 ; 375/206 ; 375/340
출원번호 US-0313974 (1994-09-28)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 43  인용 특허 : 0
초록

Non-coherently demodulated signals are efficiently decoded using a non-complex system that is independent of the fading statistics of the channel. A symbol metric calculator (406) receives a signal-to-noise ratio (404) and symbols from a non-coherently demodulated signal (402) to efficiently produce weighted symbol metrics (408). A symbol metric deinterleaver (410) is then used to deinterleave the weighted symbol metrics. A decoder (414) produces a decoded bit sequence(416) based on the deinterleaved weighted symbol metrics (412).

대표
청구항
▼

A system having an apparatus for efficiently decoding a received signal, wherein the received signal is binary encoded, bit interleaved, and modulated using M-ary modulation, where M equals 2k and k is a number of data symbols, the receiver system comprising: a) a M-ary demodulator device for producing a non-coherently demodulated signal in response to the received signal; b) a square-law combiner, coupled to the M-ary demodulator, for producing M outputs from the non-coherently demodulated signal; c) a signal-to-noise ratio calculator, coupled to the sq...

이 특허를 인용한 특허 피인용횟수: 43

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