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IMPROVING CHANNEL ESTIMATION FOR SOFTWARE RADIOS

机译:改进软件无线电的信道估计

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Channel estimator is a fundamental component in a mobile OFDM software radio receiver. From the system perspective channel estimator needs to offer high precision within various frequency bands. From the mobile software radio perspective it should require low power consumption. Best performance can be achieved by Wiener filter approach, but algorithm complexity is high and thus power consumption is not optimal for software radio platform. Thus the paper proposes software radio processor load reduction for Wiener filter in an OFDM system. Optimal run time Wiener filter coefficient calculation as well as adaptive Wiener filter length are investigated. Additionally a simplification for trigonometric functions in software radio has been employed.
机译:信道估计器是移动OFDM软件无线电接收机中的基本组件。从系统角度来看,信道估计器需要在各种频带内提供高精度。从移动软件无线电的角度来看,它应该要求低功耗。通过维纳滤波器方法可以实现最佳性能,但是算法复杂度很高,因此功耗对于软件无线电平台不是最佳的。因此,本文提出了一种用于OFDM系统中Wiener滤波器的软件无线电处理器负载减少的方法。研究了最佳运行时间维纳滤波器系数计算以及自适应维纳滤波器长度。另外,已经简化了软件无线电中的三角函数。

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