Analysis of impulse response measurements for PCS channel modelling applications

Abstract

Impulse response measurements for Personal Communication Services (PCS) were taken in the 1850-1990 MHz band in three outdoor macrocellular (cell radii of 5 km) environments: flat rural, hilly rural, and urban high-rise. The data were analyzed to provide information to assist in the development of radio propagation channel (especially tapped delay line) models for PCS applications. Analyses included number of paths, path arrival time, and path power statistics. Results of the analyses were found to be highly dependent on the threshold level used in processing. The urban high-rise cell showed a far greater number of paths than the rural cells for threshold levels 20 and 10 dB below the normalized peak of the power delay profiles.

Modeling of Multiple path Fading and Analysis of Signal Spectral Properties in Digital Signal Transmission

“…Radiated pulses in the ultra high frequency (UHF) band have a very small bandwidth and this means that each pulse contains many radio frequency cycles as in [6] and it is in this finite bandwidth that channel response is of much interest as this is where all the intelligent information resides. When the transmitter and the receiver in free space are separated by a small distance, to avoid time delays, the received voltage s(t)eJwt, can be normalised to the free-space loss [7].…”

Statistical Modeling, Simulation, and Experimental Verification of Wideband Indoor Mobile Radio Channels

“…To improve the indoor channel characterization and modeling, numerous measurement campaigns have been conducted in a variety of indoor environments, such as offices, corridors, buildings, and factory halls. Measurement results have been reported in the literature for various frequency bands, including the frequency bands at 900 MHz [11][12][13], 1.5 GHz [14,15], 2.4 GHz [16], 4-5.5 GHz [17][18][19], [17][18] GHz [18,20], and 60 GHz [21][22][23][24]. Based on measurement results, several empirical statistical channel models [13,[24][25][26][27] have been developed for the simulation and performance analysis of various indoor communication systems.…”

Wideband channel modelling in UHF band for urban area

“…Therefore, wideband transmission in urban area has been well examined by researchers in literature. In [1] [4] [5], wideband measurement has been carried out at commercial band around 1900MHz and in [3] [7][8] [9], channel modelling more focus on SHF band. Little literature has studies the channel characteristics in military UHF band, which is defined from 225MHz to 450MHz.…”