Although 4G (fourth generation) ie LTE (long term evolution) systems are now in use world-
wide. But today's 4G systems have some challenges left such as spectrum scarcity and …

In this paper, we propose a new characterization for leafless elementary trapping sets
(LETSs) of variable-regular lowdensity parity-check codes. Recently, Karimi and …

In long haul optical fiber communication networks, whichcan span thousands of kilometers,
bandwidth is at a premium due to the relatively low availability of optical fibers when …

In this article, we design finite-length irregular protograph-based quasi-cyclic (QC) low-
density parity-check (LDPC) codes with good waterfall performance and low error floor. To …

In this paper, we propose a characterization of elementary trapping sets (ETSs) for irregular
low-density paritycheck (LDPC) codes. These sets are known to be the main culprits in the …

In this paper, we propose a design technique for the construction of variable-regular time-
invariant spatially-coupled low-density parity-check (SC-LDPC) codes with small constraint …

We propose a systematic design of protograph-based quasi-cyclic (QC) low-density parity-
check (LDPC) codes with low error floor. We first characterize the trapping sets of such …

For low-density parity-check (LDPC) codes operating over additive white Gaussian noise
channels and decoded using message-passing decoders with limited precision, absorbing …

In this letter, we design time-invariant spatially coupled low-density parity-check (SC-LDPC)
codes with small constraint length and low error floor. For this, we modify the codes in the …

In this paper, we present an improvement of the PEG algorithm for constructing quasi-cyclic
low-density parity-check (QC-LDPC) codes with large girth. We introduce the concept of …