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METHOD AND APPARATUS FOR CHANNEL GAIN AND CHANNEL DELAY ESTIMATION IN A MULTI-CARRIER CDMA SYSTEM

机译:多载波CDMA系统中信道增益和信道时延估计的方法和装置

摘要

A receiver for a multi-carrier CDMA system receives a signal transmitted having a known pilot sequence on plural sub-carriers. The system includes plural down-converters for down-converting the received signal to baseband signals. A delay and channel estimator correlates at least one of the baseband signals with a single wideband pilot signal, the single wideband pilot signal including all of the known pilot sequences, to produce an estimate of channel gain and multi-path delay. Plural demodulators, one for each of the plural sub-carriers, are operatively coupled to the delay and channel estimator, each for demodulating one of the plural baseband signals using the estimate of channel gain and multi-path delay.
机译:用于多载波CDMA系统的接收机在多个子载波上接收具有已知导频序列的发射信号。该系统包括多个下变频器,用于将接收到的信号下变频为基带信号。延迟和信道估计器将至少一个基带信号与单个宽带导频信号相关,该单个宽带导频信号包括所有已知的导频序列,以产生信道增益和多径延迟的估计。用于多个子载波中的每个子载波的多个解调器可操作地耦合到延迟和信道估计器,每个解调器使用信道增益和多径延迟的估计来解调多个基带信号之一。

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