A method for implementing multi standard programmable low-density parity check decoder in a receiver is provided. The method includes (i) generating, by a control signal generation unit, pre computed control signals associated with a h-matrix, (ii) obtaining, by a control signal storage unit of a hardware decoder unit, the pre computed control signals associated with the h-matrix, (iii) obtaining, by a LLR memory fetch & data align unit, LLR bytes from a LLR memory unit, (iv) rotating, by a rotation and aligning unit, the LLR bytes to obtain aligned valid LLR bytes, (v) processing, by the processing element unit, the aligned valid LLR bytes to obtain an output data, and (vi) decoding, the h-matrix associated with at least one standard and code rates based on the pre computed control signals.