Title :
Comments on "On the Doppler spectrum at the mobile unit employing a directional antenna"
Author :
Ng, Wee Teck ; Dubey, V.K.
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore
Abstract :
In the letter by Xu et al. (see ibid., vol.5, p.13-15, Jan. 2001), the Doppler PSD when using directional antenna at the mobile station was derived. However, the ranges in some equations in this letter were not correctly stated. In this letter, we point out the discrepancies and give correct range of values.
Keywords :
Doppler effect; directive antennas; fading channels; mobile radio; Doppler spectrum; PSD; directional antenna; fading channel; mobile radio; mobile station; power spectral density; Directional antennas; Directive antennas; Doppler shift; Equations; Fading; Frequency; Mobile antennas; Mobile communication; Vehicles;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2002.805542
