Diversity Combining Considerations for Incoherent Frequency Hopping Multiple Access Systems

Ching P. Hung, Yu-Ted Su

研究成果: Article同行評審

27 引文 斯高帕斯(Scopus)

摘要

This paper studies the problem of diversity combining for frequency-hopped multiple access (FHMA) systems that operate in a mobile satellite environment characterized by frequency-nonselective Rician multipath fading. The modulation scheme considered is the incoherent M-ary frequency-shift keying (MFSK). The optimal diversity combining rule is derived under the assumptions that the number of active users (K) in the system is known, all users are chip (hop)-synchronous, and each user employs a random FH address. We suggest practical implementations that are close approximations of the optimal rule and examine the effects of various system parameters on the resulting receivers. The bit error probability performance is analyzed and numerical examples are provided. The effects of the diversity order (L), the signaling size (M) and unequal received powers are examined and related system design concerns such as system capacity and spectral efficiency are evaluated as well.

原文English
文章編號345878
頁(從 - 到)333-344
頁數12
期刊IEEE Journal on Selected Areas in Communications
13
發行號2
DOIs
出版狀態Published - 二月 1995

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