This letter addresses the problem of finding the inverse symbol-error probability (SEP) expression for coherent detection of -ary phase-shift keying with multichannel reception and maximal ratio combining in Rayleigh fading. To this aim, we derive upper and lower bounds on SEP that are simply invertible and uniformly tight for all values of signal-to-noise ratio. This enables us to obtain tight...

In recent years, a multi-antenna system is actively used to improve the performance of the communication. A MIMO-OFDM system can provide multiplexing gain or diversity gain. These gains are obtained in proportion to the increase of the number of antennas. In order to provide the optimal gain of the MIMO-OFDM system, various transmission and reception schemes are presented. This paper aims to pr...

For Rayleigh fading channels, there exists an interesting similarity between resistive circuits and time and path diversity mechanisms in multihop wireless sensor networks. A resistor-like circuit element, the erristor, representing the normalized noise-to-signal ratio, is introduced. Given an end-to-end packet delivery probability (as a QoS requirement), the nonlinear mapping from link recepti...

In this paper, the performance of frequency-hopping spread-spectrum wireless sensor network systems based on the generalized approach to signal processing in the presence of noise [1–5], which employ 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)...

Ambient light is the main impairment in indoor wireless optical communication systems for data rates up to several megabits per second. Its wide dynamic range, associated with the strong directivity of wireless optical signals, produce large variations on the received signal-tonoise ratio. This article discusses experimental results obtained from a testbed developed to compare different techniq...

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

Wireless communication demands high data rates with great quality and accuracy but such requirements can only be achieved if the signal could be received without being affected by the channel impairments. In these entire impairments multipath fading is the major problem in achieving reliable wireless transmission. It is due to the combination of constructive and destructive multipath signals re...

aspects of LTE, our evaluation is carried out via simulation. We use a fully-fledged packet simulator, which includes models of all the protocol stack, the applications and the relevant QoS metrics, and employ factorial analysis to assess the impact of the many simulation factors in a statistically rigorous way. This allows us to analyze a wider spectrum of scenarios, assessing the interplay of...

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