Configurable quasi cyclic LDPC decoder for multiple code lengths of WiMAX. (2017)

• Record Type: Journal Article
• Authors: Gowri, G. Amirtha; Rani, S. Subha
• Is Part Of: International journal of information and communication technology. Volume 11:Number 3(2017)
• Page Start: 433
• Page End: 444
• Publication Date: 2017
• Subjects: low density parity check codes -- Min-sum decoding algorithm -- configurable data router -- IEEE 80216e WiMax standard -- field programmable gate arrays; Information technology -- Periodicals; Computer science -- Periodicals; Telecommunication -- Periodicals; 004.05
• Languages: English
• ISSNs: 1466-6642

Abstract

In wireless communication, the code parameters should have great flexibility to adapt to varying channel conditions. Hence, there is a need for configurable decoders capable of meeting various service requirements and interference conditions. Therefore, a reconfigurable LDPC decoder has been proposed to support multiple code lengths (19 different code lengths) with code rate 1/2 of IEEE 802.16e WiMAX standard LDPC codes. This paper proposes the architecture of a reconfigurable LDPC decoder with parallel factor equal to 4. The reconfiguration parameters are stored in a ROM to configure the architecture to support different code lengths.