Level crossing rate, outage probability and average time of fade duration of the SSC combiner output signal are determined in this paper. The presence of log-normal fading at the input is observed. The results are shown graphically for different variance values, decision threshold values and fading parameters. Key-Words: Diversity reception, Fade Duration, Level Crossing Rate, Log-normal fading...

The analytical bit error rate of hierarchical quadra5 ture amplitude modulation formats, which include uniform and 6 nonuniform constellations, over flat Rayleigh fading environments 7 is studied in this paper. The analysis takes into account the effect 8 of imperfect channel estimation and considers diversity reception 9 with both independent identically and nonidentically distributed 10 chann...

An expression for the error probability of raised cosine filtered circular 16-ary differential amplztude and phase shift keying (circular 16-DAPSK) in a frequency-selective Rayleigh fading channel with pos td t tection diversity reception i s o(5tained. T h e effect of delay spread, modulation ring ratio and ,jilter roll-off are also considered in the formula t ion . For a constant bit rate, th...

The use of frequency-domain equalization based on minimum mean square error criterion (called MMSE-FDE) can significantly improve the bit error rate (BER) performance of DS-CDMA signal transmission compared to the well-known coherent rake combining. However, in a DS-CDMA cellular system, as a mobile user moves away from a base station and approaches the cell edge, the received signal power gets...

Single cell reuse of the same frequency, which is possible in DS-CDMA cellular systems, yields the option of site diversity to increase link capacity. In this letter, a generalized case of site diversity transmission is considered where multiple base stations (BS’s) are involved in weighted transmissions with constant total transmit power to a target mobile station (MS). A general equation of c...

In this letter, the performance of frequency-hopping spread-spectrum systems employing noncoherent reception and transmission diversity is analyzed for frequency-selective Rayleigh fading channels. Two different types of transmission diversity systems, a fast frequency-hopping (FFH) system and a multicarrier frequency-hopping (MCFH) system, are investigated. In order to combine received signals...