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In this paper, a hybrid decoding algorithm for finite-geometry low-density parity-check (FG-LDPC) codes is proposed. The algorithm is based on the interior point method with barrier function introduced by Wadayama. First, an efficient implementation of Wadayama's algorithm is presented. The main idea behind the modification is to approximate the barrier function for the fundamental polytope defining...
In this paper, a novel spectrum sensing scheme, called receiver-aided spectrum sensing scheme with spatial differentiation (RaSSSD), is proposed for orthogonal frequency division multiplexing (OFDM) based cognitive radio networks. In RaSSSD, the deployed area of secondary users (SUs) is divided into two sub-areas. By determining which sub-area secondary user transmitter (SUT) and secondary user receiver...
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