| P. Robertson, S. Kaiser, "Effects of Doppler Spreads in OFDM(A) Mobile Radio Systems" VTC Fall '99, Amsterdam. |
....multiple reflections is negligible compared to inverse of the total transmit bandwidth (so all subcarriers see the same channel fading) the Doppler spread can be shown to be equivalent to a common frequency offset. The effect of Doppler spread on OFDM was previously addressed, e.g. in [3] and [4]. S P P S Code Matrix C I FFT N N N B A S P P S I Code Matrix C 1 FFT N N N Y Weigh Matrix W N A Figure 1: OFDM and MC CDMA Transmit System and MMSE Receiver architecture This paper reviews the classic OFDM modulation, and introduces new results for a CDMA type of transmission which ....
P. Robertson, S. Kaiser, "Effects of Doppler Spreads in OFDM(A) Mobile Radio Systems" VTC Fall '99, Amsterdam, pp. 329-333.
.... FFT leakage , occurs because signal components from one subcarrier spill into other, mostly to neighboring subcarriers. In this paper, we model mobile propagation with Doppler to address the effect of user mobility. While some analyses of the effect of Doppler appeared in open literature (e.g. [7,8,13,16]) countermeasures are relatively unknown or impractical. We believe that our approach allows substantial improvements of the link performance at limited receiver complexity, without requiring any modification to the transmit standard. OFDM is often interpreted as the time frequency dual of QAM. ....
....1 E i s N m m N N n m m m n m n ICI i f f E v v E T (19) The expected signal to noise ratio becomes 0 2 2 2 6 N E f f E N s N av = D p (21) Channel Estimator Slicer W Y X X x x V V A N V A V 4 with N 0 the spectral power density of the noise. This agrees with results in [7,8,13,16], where a continuous Ushaped Doppler spectrum was considered. In [13] a result equivalent to (21) was computed by simplifying the sinc shaped frequency domain window by a linear approximation in each sampling point. An interactive spreadsheet to evaluate ICI is available on the web [15] 4 ....
P. Robertson, S. Kaiser, "Effects of Doppler Spreads in OFDM(A) Mobile Radio Systems" VTC Fall '99, Amsterdam.
No context found.
P. Robertson and S. Kaiser, "The effects of Doppler spreads on OFDM(A) mobile radio systems," in Proceedings IEEE Vehicular Technology Conference, Amsterdam, Netherlands, September 1999, pp. 329--333.
No context found.
P. Robertson and S. Kaiser, "The effects of Doppler spreads on OFDM(A) mobile radio systems," in Proceedings IEEE Vehicular Technology Conference, Amsterdam, Netherlands, September 1999, pp. 329--333.
No context found.
P. Robertson, S. Kaiser, "Effects of Doppler Spreads in OFDM(A) Mobile Radio Systems" VTC Fall '99, Amsterdam.
No context found.
P. Robertson, S. Kaiser, "Effects of Doppler Spreads in OFDM(A) Mobile Radio Systems" VTC Fall '99, Amsterdam.
No context found.
P. Robertson, S. Kaiser, "Effects of Doppler Spreads in OFDM(A) Mobile Radio Systems" VTC Fall '99, Amsterdam, pp. 329-333.
No context found.
P. Robertson and S. Kaiser, "Effects of doppler spreads in OFDM(A) mobile radio systems," in Proc. 56th Vehicular Technology Conf.---Fall'99, vol. 50, Amsterdam, The Netherlands, Sept. 1999, pp. 329--333.
No context found.
Robertson, P.; Kaiser, S., "The effects of Doppler spreads in OFDM(A) mobile radio systems," in IEEE VTC 50th Vehicular Technology Conference, vol. 1, September 1999, pp. 19--22.
No context found.
P. Robertson and S. Kaiser, "The effects of Doppler spreads in OFDM(A) mobile radio systems," in Proc. VTC-Fall, Amsterdam, The Netherlands, Sept. 1999, pp. 329--333.
Online articles have much greater impact More about CiteSeer.IST Add search form to your site Submit documents Feedback
CiteSeer.IST - Copyright Penn State and NEC