Envelope fading, random FM, and time delay spread are the major degradation factors in digital FM land mobile radio transmission systems using VHF/UHF frequencies. By taking these factors into account, the bit-error-rate (BER) performance of minimum-shift-keying (MSK) with differential detection is theoretically analyzed by using a two-path Rayleigh fading model. The postdetection selection diversity is considered in the analysis to clarify improvement in BER performance. Based on the results, it is shown that a preferable transmission rate exists for a typical land mobile propagation environment.
|Number of pages
|Transactions of the Institute of Electronics and Communication Engineers of Japan. Section E
|Published - Jan 1 1982
ASJC Scopus subject areas
- General Engineering