China Multimedia Mobile Broadcasting (CMMB) LDPC decoder

TC4300 is a LDPC decoder designed for China Multimedia Mobile Broadcasting (CMMB) specifications. The Core is a stand-alone module, with no external memory needs. It is available for mainstream FPGA or ASIC device targets. Two throughput levels are proposed (*):

• low-complexity Core : 75 Mbps
• high-throughput Core : 150 Mbps
  (*) Throughput depends on the selected device and vary with the number of iterations.

• Compliant with China Multimedia Mobile Broadcasting (CMMB) specifications
  • Block size 9216 bits
  • Code rate 1/2 and 3/4
• Near floating point error correction performance
• Early iteration stopping feature
• Patented architecture allowing high throughput for reduced footprint
• On-the-fly change of code rate and number of iterations
• Low latency
• Single FPGA Core (no external memory required), available on all popular Xilinx, Altera and Lattice devices
• ASIC Core : Verilog or VHDL RTL Core delivery
• Encoder available for decoder validation