该文章提出了一种自动虚拟的校正方法以及对应的定位算法，用于基于RSSI的无线定位领域中，可以提高定位精度。-In this paper, we present an automatic virtual calibration method of the propagation model that does not require human intervention therefore, can be periodically performed, following the wir

Channel estimation for mobile OFDM systems requires transmission of pilot tones. This paper addressesthe important issue of selecting these pilot tones, so as to achieve a good quality estimate. It is shown that the best set of tones to be used a