MUMBAI, India, March 13 -- Intellectual Property India has published a patent application (202621006479 A) filed by St. Vincent Pallotti College Of Engineering And Technology, Nagpur, Maharashtra, on Jan. 22, for 'an irregular sparse code multiple access communication system.'
Inventor(s) include Kulkarni, Madhura Ashay; Banerjee, Abhranil Dulal; Rukmini, M. S. S.; and Raut, Rajeshree D.
The application for the patent was published on March 13, under issue no. 11/2026.
According to the abstract released by the Intellectual Property India: "The present invention relates to an irregular sparse code multiple access communication system for optimizing user connectivity, throughput, and reliability in next-generation wireless communication networks. The system employs a sparse factor matrix with non-uniform user (dv) and resource (df) degree distributions, enabling dynamic user-to-resource connectivity based on priority, traffic demand, and channel conditions. Rotation-optimized Star-QAM codebooks are generated by scaling and rotating sub-constellations (SC1-SC4) arranged via a Latin matrix, maximizing minimum Euclidean distance while maintaining sparsity. Degree-aware Message Passing Algorithm (MPA) decoding iteratively updates messages between resource and user nodes, with complexity scaling according to user degree, reducing energy consumption for low-priority users. The architecture is implemented on FPGA/ASIC/SoC platforms, incorporating a hybrid ARM Cortex-A9/software controller and hardware FSM to manage real-time factor-matrix generation, codebook formation, and iterative decoding. The invention improves spectral efficiency, bit error rate, and latency, supporting 5G/6G, IoT, mMTC, URLLC, V2X, and satellite networks, providing adaptive, scalable, and energy-efficient multi-user communication."
Disclaimer: Curated by HT Syndication.
