Performance evaluation of rate less channel coding for MU-MIMO OFDM-LTE systems
Patteti Krishna, Kalitkar Kishan Rao, Tipparti Anil Kumar, K. Praveen Kumar · 2012
3GPP Long term evolution (LTE) wireless broadband is intended to provide higher data rates and throughput with less latency. Due to the channel impairments of the radio channel and higher order modulation techniques, the probabilities of errors are high. Using belief propagation algorithm both irregular and regular Low Density Parity Codes (LDPC) have showed to achieve rates close to the capacity on the other channels like Binary Symmetric channel (BSC) and Additive White Gaussian Noise Channel (AWGNC) with channel state information (CSI) available at both transmitter and receiver. Furthermore, Rate less codes is a class of codes without a predefined number of encoding symbols. Luby Transform (LT) code a class of rate less codes provides an efficient way to transfer information over erasure channels like Internet. In this paper, the performance of LDPC (irregular, regular) and LT codes are investigated and the results illustrate the performance gains of LT codes for Multi user Multiple Inputs and Multiple Outputs in combination with orthogonal frequency division multiplexing system over LDPC codes with the Binary erasure channel (BEC).