在数据通信与网络中广泛采用的循环冗余校验码(CRC),是从循环码中派生的缩短循环码,是一类很重要的检错码。CRC码是在信息码的后面加上几位校验码,以增加整个编码系统的查错纠错能力。本文根据调频多工数据广播(RDS)的基带编码格式的结...在数据通信与网络中广泛采用的循环冗余校验码(CRC),是从循环码中派生的缩短循环码,是一类很重要的检错码。CRC码是在信息码的后面加上几位校验码,以增加整个编码系统的查错纠错能力。本文根据调频多工数据广播(RDS)的基带编码格式的结构和特点,对现有的CRC码校验的并行算法进行比较和分析,实现(26,16)编码器.在Xilinx ISE 10.1平台下给出该编码的仿真结果,通过对其仿真结果进行分析和对比得出一种适用于RDS基带信号的误码校验的CRC并行算法的逻辑编码。展开更多
This letter presents a programmable single-chip architecture for Multi-lnput and Multi-Output (M1MO) OFDM baseband receiver. The architecture comprises a Single Instruction Multiple Data (SIMD) DSP core and three ...This letter presents a programmable single-chip architecture for Multi-lnput and Multi-Output (M1MO) OFDM baseband receiver. The architecture comprises a Single Instruction Multiple Data (SIMD) DSP core and three coprocessors that are used for synchronization, FFT and channel decoder. In this MIMO OFDM system, the Zero Correlation Zone (ZCZ) code is used as the synchronization word preamble of packet in the physical layer in order to avoid the interference from other transmitting antennas. Furthermore, a simple channel estimation algorithm is proposed which is appropriate tbr the SIMD DSP computation.展开更多
文摘在数据通信与网络中广泛采用的循环冗余校验码(CRC),是从循环码中派生的缩短循环码,是一类很重要的检错码。CRC码是在信息码的后面加上几位校验码,以增加整个编码系统的查错纠错能力。本文根据调频多工数据广播(RDS)的基带编码格式的结构和特点,对现有的CRC码校验的并行算法进行比较和分析,实现(26,16)编码器.在Xilinx ISE 10.1平台下给出该编码的仿真结果,通过对其仿真结果进行分析和对比得出一种适用于RDS基带信号的误码校验的CRC并行算法的逻辑编码。
基金Supported by the National Natural Science Foundation of China (No.60476013).
文摘This letter presents a programmable single-chip architecture for Multi-lnput and Multi-Output (M1MO) OFDM baseband receiver. The architecture comprises a Single Instruction Multiple Data (SIMD) DSP core and three coprocessors that are used for synchronization, FFT and channel decoder. In this MIMO OFDM system, the Zero Correlation Zone (ZCZ) code is used as the synchronization word preamble of packet in the physical layer in order to avoid the interference from other transmitting antennas. Furthermore, a simple channel estimation algorithm is proposed which is appropriate tbr the SIMD DSP computation.