电子与信息学报
電子與信息學報
전자여신식학보
JOURNAL OF ELECTRONICS & INFORMATION TECHNOLOGY
2015年
8期
1937-1943
,共7页
LDPC码译码器%动态自适应%DVB-S2标准%FPGA
LDPC碼譯碼器%動態自適應%DVB-S2標準%FPGA
LDPC마역마기%동태자괄응%DVB-S2표준%FPGA
Low Density Parity Check (LDPC) code decoder%Dynamic adaptive%DVB-S2 standard%FPGA
在复杂深空通信环境中,自适应能力的强弱对低密度奇偶校验(LDPC)码译码器能否保持长期稳定工作具有重要影响。该文通过对DVB-S2标准LDPC码译码器各功能模块的IP化设计,将动态自适应理论参数化映射到各功能模块中,实现动态自适应LDPC码译码器的设计。基于Stratix IV系列FPGA的验证结果表明,动态自适应 LDPC 译码器可以满足不同码率码长及不同性能需求下的译码。同时,单译码通道可以保证译码数据信息吞吐率达到40.9~71.7 Mbps。
在複雜深空通信環境中,自適應能力的彊弱對低密度奇偶校驗(LDPC)碼譯碼器能否保持長期穩定工作具有重要影響。該文通過對DVB-S2標準LDPC碼譯碼器各功能模塊的IP化設計,將動態自適應理論參數化映射到各功能模塊中,實現動態自適應LDPC碼譯碼器的設計。基于Stratix IV繫列FPGA的驗證結果錶明,動態自適應 LDPC 譯碼器可以滿足不同碼率碼長及不同性能需求下的譯碼。同時,單譯碼通道可以保證譯碼數據信息吞吐率達到40.9~71.7 Mbps。
재복잡심공통신배경중,자괄응능력적강약대저밀도기우교험(LDPC)마역마기능부보지장기은정공작구유중요영향。해문통과대DVB-S2표준LDPC마역마기각공능모괴적IP화설계,장동태자괄응이론삼수화영사도각공능모괴중,실현동태자괄응LDPC마역마기적설계。기우Stratix IV계렬FPGA적험증결과표명,동태자괄응 LDPC 역마기가이만족불동마솔마장급불동성능수구하적역마。동시,단역마통도가이보증역마수거신식탄토솔체도40.9~71.7 Mbps。
Faced with the complex environment of deep space communication, the adaptive capacity can have an impact on the ability of the Low Density Parity Check (LDPC) code decoder to maintain long-term stability. This paper proposes a design method of dynamic adaptive LDPC code decoder. Through the IP-based design of each function module, the design method of dynamic adaptive can be mapped to each function module in DVB-S2 LDPC code decoder. The verification results based on the Stratix IV FPGA show the dynamic adaptive LDPC code decoder not only can decode under the different code length and code rate, but also can decode under the different decoding performance. Meanwhile, the single-channel decoder can ensure the information throughput to reach to 40.9~71.7 Mbps.