We study a modification method for constructing lowdensity parity-check (LDPC) codes for solid burst erasures. Our proposed modification method is based on a column permutation technique for a parity-check matrix of the original LDPC codes. It can change the burst erasure correction capabilities without degradation in the performance over random erasure channels. We show by simulation results t...

I summarize the use of the ROSAT satellite over the last months for the investigation of well localized GRB error boxes. In particular, I report about the attempts for and results of quick follow-up observations (including the GRBs localized with BeppoSAX and RXTE) with ROSAT with its capability to achieve 10 locations of X-ray afterglow sources.

It is well known that during the process of transmission errors occur predominantly in the form of a burst. However, it does not generally happen that all the digits inside any burst length get corrupted. Also when burst length is large then the actual number of errors inside the burst length is also not very less. Keeping this in view, we study codes which detect/correct moderate-density burst...

In this paper, we present a lower bound for low density closed loop burst error correcting code in two sub-blocks of length 1 n and 2 n of the total code length 1 2 ( ) n n n n   . Keywords-Open loop burst, Closed loop burst, Parity check matrix,Syndromes, Error correction.