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Multiple hops/symbol fast frequency-hopping spread spectrum multiple access with coding for indoor radio

机译:用于室内无线电的多跳/符号快速跳频扩频多址接入

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The paper is concerned with the bit error rate (BER) performance of multiple hops/symbol fast-frequency-hopped spread-spectrum multiple-access (FFH-SSMA) systems operating through an indoor radio multipath Rayleigh fading channel. M-ary frequency-shift-keying (MFSK) modulation with noncoherent square-law envelope demodulation and Reed-Solomon (RS) coding is considered. Results obtained in this study show that an FFH-SSMA system is not sensitive to the changes in the number of paths. Employing RS coding with an increased number M of MFSK signals yields a significant improvement in BER performance. Assuming a given system bandwidth, using a single hop per symbol is the best solution when the multiaccess interference can be large. Using several hops per symbol is more advantageous when the multiaccess interference is small.
机译:本文关注的是通过室内无线多径瑞利衰落信道工作的多跳/符号快跳频扩频多址(FFH-SSMA)系统的误码率(BER)性能。考虑了具有非相干平方律包络解调和里德-所罗门(RS)编码的M进制频移键控(MFSK)调制。这项研究获得的结果表明,FFH-SSMA系统对路径数量的变化不敏感。使用带有增加的M个MFSK信号的RS编码可以显着提高BER性能。假设给定的系统带宽,当多址干扰可能很大时,每个符号使用单跳是最好的解决方案。当多路访问干扰较小时,每个符号使用几跳更为有利。

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