会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 6. 发明申请
    • Joint carrier synchronization and channel equalization method for OFDM systems
    • OFDM系统的联合载波同步和信道均衡方法
    • US20100239033A1
    • 2010-09-23
    • US12585220
    • 2009-09-09
    • Muh-Tian ShiueChih-Feng WuChorng-Kuang Wang
    • Muh-Tian ShiueChih-Feng WuChorng-Kuang Wang
    • H04L27/28
    • H04L27/2672H04L25/03273H04L27/266H04L2025/03414H04L2025/0377
    • A joint carrier synchronization and channel equalization method for OFDM systems, that is suitable for use in a receiver of said orthogonal frequency division multiplexer (OFDM) systems, comprising the following steps: firstly, receiving a reception signal sample of an OFDM symbol, and obtaining simultaneously a phase error and a gain error on each sub-channel in a frequency domain, through outputting a sub-channel signal on each said sub-channel in said frequency domain; next, obtaining an execution carrier frequency offset factor, an execution phase compensation factor, and an execution gain compensation factor based on said phase error and said gain error; and finally, eliminating a phase offset of said reception signal sample of a next symbol in a time domain based on said factors, and compensating a magnitude distortion and a phase distortion on each said sub-channel in said frequency domain for said reception signal of said next symbol.
    • 一种用于OFDM系统的联合载波同步和信道均衡方法,其适用于所述正交频分复用器(OFDM)系统的接收机,包括以下步骤:首先,接收OFDM符号的接收信号样本,并获得 通过在所述频域中的每个所述子信道上输出子信道信号,同时在频域中的每个子信道上产生相位误差和增益误差; 接下来,基于所述相位误差和所述增益误差获得执行载波频率偏移因子,执行相位补偿因子和执行增益补偿因子; 并且最后,基于所述因素消除在时域中的下一个符号的所述接收信号样本的相位偏移,并且在所述频域的每个所述子信道上对所述第一信号的所述接收信号的所述接收信号补偿每个所述子信道的幅度失真和相位失真 下一个符号。
    • 8. 发明授权
    • Joint carrier synchronization and channel equalization method for OFDM systems
    • OFDM系统的联合载波同步和信道均衡方法
    • US08223861B2
    • 2012-07-17
    • US12585220
    • 2009-09-09
    • Muh-Tian ShiueChih-Feng WuChorng-Kuang Wang
    • Muh-Tian ShiueChih-Feng WuChorng-Kuang Wang
    • H04K1/10H04L27/00
    • H04L27/2672H04L25/03273H04L27/266H04L2025/03414H04L2025/0377
    • A joint carrier synchronization and channel equalization method for OFDM systems, that is suitable for use in a receiver of said orthogonal frequency division multiplexer (OFDM) systems, comprising the following steps: firstly, receiving a reception signal sample of an OFDM symbol, and obtaining simultaneously a phase error and a gain error on each sub-channel in a frequency domain, through outputting a sub-channel signal on each said sub-channel in said frequency domain; next, obtaining an execution carrier frequency offset factor, an execution phase compensation factor, and an execution gain compensation factor based on said phase error and said gain error; and finally, eliminating a phase offset of said reception signal sample of a next symbol in a time domain based on said factors, and compensating a magnitude distortion and a phase distortion on each said sub-channel in said frequency domain for said reception signal of said next symbol.
    • 一种用于OFDM系统的联合载波同步和信道均衡方法,其适用于所述正交频分复用器(OFDM)系统的接收机,包括以下步骤:首先,接收OFDM符号的接收信号样本,并获得 通过在所述频域中的每个所述子信道上输出子信道信号,同时在频域中的每个子信道上产生相位误差和增益误差; 接下来,基于所述相位误差和所述增益误差获得执行载波频率偏移因子,执行相位补偿因子和执行增益补偿因子; 并且最后,基于所述因素消除在时域中的下一个符号的所述接收信号样本的相位偏移,并且在所述频域的每个所述子信道上对所述第一信号的所述接收信号的所述接收信号补偿每个所述子信道的幅度失真和相位失真 下一个符号。
    • 10. 发明授权
    • Low complexity and low power phase shift keying demodulator structure
    • 低复杂度和低功耗相移键控解调器结构
    • US07911266B2
    • 2011-03-22
    • US12355812
    • 2009-01-19
    • Cihun-Siyong GongMuh-Tian ShiueKai-Wen Yao
    • Cihun-Siyong GongMuh-Tian ShiueKai-Wen Yao
    • H03D3/00
    • H03D3/006
    • A low complexity and low power phase shift keying demodulator structure includes a digitizer, a phase-transition-independent carrier clock extractor, a binary correlater, a delay element, and a sampler. The digitizer digitizes a BPSK signal for an output waveform. The phase-transition-independent carrier clock extractor detects the phase transition on the output of the digitizer and produces a carrier clock signal. The binary correlater has correlated processes to the output signal of the digitizer and carrier clock signal obtained from the phase-transition-independent carrier clock extractor. The sampler samples the signal from the binary correlater according to the signal from the delay element in order to finish the demodulation with only a small capacitance.
    • 低复杂度和低功率相移键控解调器结构包括数字转换器,相移独立载波时钟提取器,二进制相关器,延迟元件和采样器。 数字转换器将输出波形的BPSK信号数字化。 相位转移无关载波时钟提取器检测数字转换器输出端的相位转换,产生载波时钟信号。 二进制相关器具有与数字转换器的输出信号和从相变非独立载波时钟提取器获得的载波时钟信号的相关处理。 采样器根据来自延迟元件的信号对来自二进制相关器的信号进行采样,以完成仅具有小电容的解调。