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BLLD 부호의 mutual InformationThe mutual Information for Bit-Linear Linear-Dispersion Codes

Other Titles
The mutual Information for Bit-Linear Linear-Dispersion Codes
Authors
김향란양재동송경영노종선신동준
Issue Date
Oct-2007
Publisher
한국통신학회
Citation
한국통신학회논문지, v.32, no.10, pp 958 - 964
Pages
7
Indexed
KCI
Journal Title
한국통신학회논문지
Volume
32
Number
10
Start Page
958
End Page
964
URI
https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/179443
ISSN
1226-4717
2287-3880
Abstract
이 논문은 maximum a posteriori (MAP) 비트 검출(bit detection)의 비트 오류 확률 (bit error probability:BEP)과 비트 최소 평균 제곱 오류(bit minimum mean square error: bit MMSE)사이의 관계를 유도한다. BEP는 bit MMSE의 1/4 보다 크고 1/2보다 작음을 유도한다. 이 결론을 이용하면 bit-linear linear-dispersion (BLLD) 부호를 적용한 다중 입출력 (multiple-input multiple-output: MIMO) 통신 시스템에서 가우시안 채널의 mutual information의 미분 값의 하한과 상한을 BEP로부터 얻을 수 있고 나아가서 mutual information의 하한과 상한을 구할 수 있다.
In this paper, we derive the relationship between the bit error probability (BEP) of maximum a posteriori (MAP) bit detection and the bit minimum mean square error (MMSE), that is, the BEP is greater than a quarter of the bit MMSE and less than a half of the bit MMSE. By using this result, the lower and upper bounds of the derivative of the mutual information are derived from the BEP and the lower and upper bounds are easily obtained in the multiple-input multiple-output (MIMO) communication systems with the bit-linear linear-dispersion (BLLD) codes in the Gaussian channel.
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