Hopping time estimation algorithm of frequency hopping signal under impulse noise

Epoch Time Estimation of the Frequency Hopping Signal

The paper investigates the epoch time parameters estimation of the frequency hopping FH signals, which are of major interest in most of the recent commercial applications. Two types of estimation models has been simulated and examined in this work. The first is the single-hop autocorrelation (SHAC) processor. It is considered as a means of estimating the epoch time of the FH signal in the prese...

Channel Estimation for Frequency Hopping

Frequency hopping systems have traditionally been applied in low-data rate applications where the received signal can be considered narrow-band. The multipath delays encountered in a wireless channel has considerably less a ect on a narrow-band signal. In such cases, delay estimation is not of much signi cance. However, delay estimation becomes increasingly important when the bandwidth of the s...

Multiple Access with Time-Hopping Impulse Modulation

A time-hopping modulation format employing impulse signal technology has several features which may make it attractive for multiple-access communications. These features are outlined, an estimate of the multipleaccess capability of a communication system employing this format under ideal propagation conditions is presented, and emerging design issues are described. Time Hopping with Impulses Th...

Time hopping and frequency hopping in ultrawideband systems

This paper analyzes frequency-hopping (FH) and time-hopping (TH) as multiple access format for ultrawideband communications. We apply the concept of fourthegy, recently introduced by Subramanian and Hajek, to both TH and FH.We find that the design rules are different for FCCcompliant systems(where the power spectral density is limited)than for conventional systems(where the energy per bit is li...

Multipath Delay Estimation for Frequency Hopping Systems