Journal of Astronautics ›› 2015, Vol. 36 ›› Issue (1): 96-102.doi: 10.3873/j.issn.1000-1328.2015.01.013

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ASIC Design of an LDPC Encoder for Satellite Ground High Speed Data Transmission System

ZHANG Hao, YIN Liu guo   

  1. 1. School of Aerospace,Tsinghua University,Beijing 100084,China;
     2. EDA Lab,Research Institute of Tsinghua University in Shenzhen,Shenzhen, 518057,China
  • Received:2014-01-08 Revised:2014-05-28 Online:2015-01-15 Published:2015-01-25

Abstract:

In this paper, a high-speed and multi-code-rate low density parity check(LDPC) encoder architecture is proposed for the LDPC codes used in high-speed satellite-ground data transmission of the Chinese high resolution earth observation satellite. Synthesized with Taiwan semiconductor manufacturing company (TSMC) 130 nm complementary oxide metal semiconductor (COMS) standard cell library, the designed multi-code-rate LDPC encoder can achieve 1.6 Gbps throughput in 200 MHz clock frequency, the die size of which is only 5.495 mm 2, and the dynamic power dissipation of which is only 184.3 mW. Compared with the encoder designed by the traditional LDPC encoder architecture, the memory size, the die size, and the power consumption of the new encoder can be reduced by 18.52%, 20.3% and 83.3% respectively.

Key words: Satellite communication, LDPC encoder, Multi-code-rate fusion, Application specific integrated circuit (ASIC) chip design

CLC Number: