Wireless channels usually face bursty errors, i.e., errors are prone to occur in clusters. These bit errors can be modeled using the Gilbert-Elliott model. When data packets are transferred over channels with bursty errors, packet error statistics are more important than bit error statistics to analyze the communication performance. This has been modeled as a discrete time Markov chain (DTMC) i...

In a typical burst-error correction application of a product code of nv nh arrays, one uses an [nh; nh rh] code Ch that detects corrupted rows, and an [nv; nv rv] code Cv that is applied to the columns while regarding the detected corrupted rows as erasures. Although this conventional product code scheme o ers very good error protection, it contains excessive redundancy, due to the fact that th...

This letter describes a technique for finding cyclic redundancy check polynomials for systems for transmission over symmetric channels which encode information in multiple voltage levels, so that the resulting redundancy check gives good error protection and is efficient to implement. The codes which we construct have a Hamming distance of 3 or 4. We discuss a way to reduce burst error in paral...

The possibility that classical gamma ray bursts (GRB) occasionally repeat from the same locations on the sky provides a critical test of GRB models. There is currently some controversy about whether there is evidence for burst repetition in the BATSE data. We introduce a gamma ray burst \pair matching" statistic that can be used to search for a repeater signal in the BATSE data. The pair matchi...

Gamma ray burst afterglows can be identified in single epoch observations using three or more optical filters. This method relies on color measurements to distinguish the power law spectrum of an afterglow from the curved spectra of stars. Observations in a fourth filter will further distinguish between afterglows and most galaxies up to redshifts z ≈ 1. By allowing faster identification of opt...

We construct two-dimensional codes for correcting burst errors using the finite field Fourier transform. The encoding procedure is performed in the transformed domain using the conjugacy property of the finite field Fourier transform. The decoding procedure is also done in the transformed domain. Our code is capable of correcting multiple non-overlapping occurrence of different error patterns f...

This paper obtains bound for linear codes which are capable to detect and locate errors which occur during the process of transmission. The kind of errors considered are known as repeated burst errors of length b(fixed) introduced by Dass and Garg [10] which has its seeds in the work carried out by Srinivas et al. [15] in connection with models of stroke-induced epilepsy which is an area of mat...

Capability to combat channel fading and easy implementation have made the pilot symbol assisted modulation (PSAM) of practical interest in mobile communications. However, the operation in burst mode for multiple access purpose has sitill been a missing part from previous research. This work first examines the burst design problem associated with pilot symbol allocation in a frequency flat fadin...

How does the saccadic movement system select a target when visual, auditory, and planned movement commands differ? How do retinal, head-centered, and motor error coordinates interact during the selection process? Recent data on superior colliculus (SC) reveal a spreading wave of activation across buildup cells the peak activity of which covaries with the current gaze error. In contrast, the loc...

Using a model from the literature, the performance of convolutionally interleaved phase shift keying (PSK) and differential phase shift keying (DPSK) trellis codes for digital speech transmission over a shadowed mobile satellite communication channels is determined via digital computer simulation. First the characteristics of fading channels are examined and analyzed in terms of the probability...