DocumentCode :
1219851
Title :
Message Errors and Message-Channel Signal-to-Noise Ratios
Author :
Florman, E.F.
Author_Institution :
Defence Commun. Agency, Washington, D.C., USA
Volume :
16
Issue :
4
fYear :
1968
fDate :
8/1/1968 12:00:00 AM
Firstpage :
576
Lastpage :
581
Abstract :
Basic statistical characteristics of the message-signal channel output signal-to-noise ratio (SNR) are discussed and measured. An explanation and experimental proof are given for the lack of close correlation between the measured median output SNR and the measured average bit-error rate. Also, it is shown that a much higher correlation exists between the fade-level distribution of the output SNR and the average bit-error rate. These results also explain the lack of close correlation between the median of the received RF signal and the average bit-error rate. The measured relationship between the average bit-error rate and the median output SNR was found to be considerably different from the calculated value for quadruple-diversity conditions; this difference is attributed to the fact that the actual distribution of the output SNR does not correspond to the theoretical distribution for quadruplediversity conditions for the FDM-FM type of transhorizon tropospheric radio link.
Keywords :
Bit error rate; Decoding; Milling machines; Modems; Noise level; Noise measurement; Particle measurements; Pulse modulation; Signal to noise ratio; Time measurement;
fLanguage :
English
Journal_Title :
Communication Technology, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9332
Type :
jour
DOI :
10.1109/TCOM.1968.1089876
Filename :
1089876
Link To Document :
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