In this paper, the ratio of product of two α-k-μ random variables and α-k-μ random variable is analyzed. The closed form expression for average level crossing rate (LCR) of the ratio of product of two α-k-μ random variables and α-k-μ random variable is determined. The expression for level crossing rate of the ratio of product of two α-k-μ random variables and α-k-μ random variable can be used f...

A novel cyclic-prefix based delay-spread estimation technique for wireless OFDM systems is proposed. In particular, the authors propose a technique for estimating the delays and powers of multipath components when the channel is sparse, i.e. a few strong multipaths distantly spaced in time, and a technique for estimating the RMS delay-spread when the channel has a large number of sample-spaced ...

SUMMARY This paper proposes two space-time joint channel parameter estimation and signal detection algorithms for downlink DS-CDMA systems with multiple-input-multiple-output (MIMO) wireless multipath fading channels. The proposed algorithms initially use the space-time MUSIC to estimate the DOA-delays of the multipath channel. Based on these estimated DOA-delays, a space-time channel decoupler...

The focus of this contribution is put on the blind localization of mobile terminals in urban scenarios. The proposed localization method exploits multipath propagation, which is typical of urban terrain. It is assumed that each multipath component is characterized by its direction of arrival (DoA) and relative time of arrival (RToA) parameter. In essence the developed method compares the multip...

In order to achieve better throughput, load balancing and congestion avoidance multipath routing has been widely studied and used in wired networks. The good results inspired the researchers in mobile Ad Hoc area and many multipath routing protocols have been proposed. Each of these protocols has a different approach to problem and a different objective to achieve. To best of our knowledge, the...

Global Navigation Satellite Systems (GNSS) positioning accuracy indoor and urban canyons environments are greatly affected by multipath due to distortions in its autocorrelation function. In this paper, a cross-correlation function between the received sine phased Binary Offset Carrier (sine-BOC) modulation signal and the local signal is studied firstly, and a new multipath mitigation method ba...

This paper investigates satellite-MIMO, space-time coded for diversity gain. Whereas a dual satellite to single antenna terminal link provides shadowing and some multipath diversity gain, a dual antenna terminal provides additional multipath diversity gain. This gain is demonstrated by simulating high resolution time series channel data for urban and highway environments, for SISO, MISO and MIM...

Localization of radio frequency sources over multipath channels is a difficult problem arising in applications such as outdoor or indoor gelocation. Common approaches that combine ad-hoc methods for multipath mitigation with indirect localization relying on intermediary parameters such as time-ofarrivals, time difference of arrivals or received signal strengths, provide limited performance. Thi...

Successive interference cancellation is a promising technique for increasing the capacity of uplink CDMA channels. In this paper, the technique is extended to a low-earth orbit satellite channel. Unlike terrestrial cellular channels, satellite channels typically have a limited multipath profile, but significant closed-loop power control error due to the round-trip delay incurred in communicatin...

The surveillance picture provided by an Over-The-Horizon Radar (OTHR) is complicated by multipath propagation. Multiple propagation paths can give rise to several distinct tracks for each target. It has been shown that a Multipath Track Fusion (MPTF) algorithm can successfully use both track and ionospheric information to provide a single track per target for a single radar. This paper presents...