Abstract:
Autonomous decentralized system is need of the
dynamically varying society. Various autonomous decentralized
systems architecture proposed and deployed, use of IEEE
802.11n/ac (Wi-Fi) and IEEE 802.16e (Wi-max) standards for
surveillance purposes in different geographical region. These
standards use LDPC codes as a channel code having better error
correcting performance. This article deals with a construction of
less computational complexity method for constructing exponent
matrix 3,K having girth 8, 10, and 12 of quasi-cyclic lowdensity parity-check (QC-LDPC) codes. In this method, we first
generate a base matrix and then the same matrix is further used
for expanding till desired size of the exponent matrix. The
construction of code deals with the generation of base matrix by a
simple algorithm for girth 8, 10, and 12. Our method is flexible
for any block-column length K. Finally, a new method is given
with less computational complexity with optimized CPM size
