| タイトル | Coding tradeoffs for improved performance of FH/MFSK systems in partial band noise |
| 著者（英） | Levitt, B. K.; Omura, J. K. |
| 著者所属（英） | Jet Propulsion Lab., California Inst. of Tech. |
| 発行日 | 1981-01-01 |
| 言語 | eng |
| 内容記述 | Partial band noise jamming can severely degrade the performance of frequency-hopped, M-ary frequency-shift keyed communciation systems. This paper illustrates the tradeoffs between channel coding, diversity, and block orthogonal (MFSK) modulation as a means of overcoming the advantage of worst case, non-adaptive (as opposed to repeat-back) partial band jamming. For ease of computation, the analysis relies on exponentially tight error bounds, and is based on a noncoherent detection metric that requires jamming state information for each hop. A more robust, less complex receiver structure which eliminates the jamming knowledge requirement is shown to degrade performance less than 2-1/2 dB. The coding tradeoffs discussed in this report are exemplified in the design of a hypothetical 32 kb/s military frequency-hopped communication link. |
| NASA分類 | COMMUNICATIONS AND RADAR |
| レポートNO | 83A19751 |
| 権利 | Copyright |
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