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The symbol inside time fluctuation compensating manner in multi carrier receiving, in the time fluctuation compensator inside symbol of the multi carrier receiving device and the signal of the multi carrier receiving device
The symbol inside time fluctuation compensating manner in multi carrier receiving, in the time fluctuation compensator inside symbol of the multi carrier receiving device and the signal of the multi carrier receiving device
PPROBLEM TO BE SOLVED: To compensate an intra-symbol time variation in a multicarrier receiving apparatus. PSOLUTION: As a configuration of an intra-symbol temporal variation estimator of 3.B, a digital complex signal outputted from an orthogonal demodulation unit 1 is inputted to a delay circuit 111, a phase variation estimation unit 112, and a short block amplitude variation estimation unit 113. A delay signal resulting from delaying the digital complex signal by an effective symbol length (TSBf/SB) is outputted from the delay circuit 111 and inputted to the phase variation estimation unit 112. In the phase variation estimation unit 112, a phase variation for each time interval TSBa/SB(TSBa/SBTSBf/SB) is estimated from the digital complex signal outputted from the orthogonal demodulation unit 1 and the delay signal. In the short block amplitude variation estimation unit 113, an amplitude variation for each time interval TSBa/SB(TSBa/SBTSBf/SB) is estimated from the digital complex signal outputted from the orthogonal demodulation unit 1. In a correction factor computation circuit 114, a complex factor for compensating a time variation in a block TSBa/SBis calculated from the inputted amplitude variation and phase variation, and outputted to a complex multiplier 12. PCOPYRIGHT: (C)2005,JPO&NCIPI
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机译:
要解决的问题:补偿多载波接收设备中的符号内时间变化。解决方案:作为3.B的符号内时间变化估计器的配置,将从正交解调单元1输出的数字复合信号输入到延迟电路111,相位变化估计单元112和短路。块幅度变化估计单元113。将数字复数信号延迟有效符号长度(T f SB>)而得到的延迟信号从延迟电路111输出,并输入到相位变化估计单元112。在相位变化估计单元112中,从数字估计每个时间间隔T a SB>(T a SB> f SB>)的相位变化。从正交解调单元1输出的复数信号和延迟信号。在短块幅度变化估计单元113中,从每个时间间隔T a SB>(T a SB> f SB>)估计幅度变化。从正交解调单元1输出的数字复信号。在校正因子计算电路114中,根据输入的幅度变化和相位变化来计算用于补偿块T a SB>中的时间变化的复数因子。 ,并输出到复数乘法器12。