Title :
Medium- and Large-Scale Characterization of UMTS-Allocated Frequency Division Duplex Channels
Author :
Salous, Sana ; Gokalp, Hulya
Author_Institution :
Univ. of Manchester, Manchester
Abstract :
A dual-band sounder is used in both trolley and van measurements in the dense urban environment of Manchester city center to characterize the uplink (1920-1980 MHz) and downlink (2110-2170 MHz) frequency-division duplex (FDD) channels allocated to third-generation (3G) mobile radio systems. The data are analyzed with 60- and 5-MHz resolutions, as used for 3G wideband code-division multiple-access systems. Root-mean-square (rms) delay spread and 15-dB widths of mainly temporally averaged delay profile are presented either as cumulative distribution functions (cdfs) for each individual frequency band or as histograms of the difference between uplink and downlink on a local area basis. It was found that the histograms show larger differences between the two bands than the individual cdf and that the differences between the FDD channels are more pronounced on circumferential routes and shadowed locations. Correlations of rms delay spread with excess path loss and distance are on the order of 0.5 and 0.4, respectively.
Keywords :
3G mobile communication; frequency division multiple access; telecommunication channels; 3G mobile radio system; 3G wideband code-division multiple-access systems; UMTS-allocated frequency division duplex channels; dual-band sounder; excess path loss; frequency 1920 MHz to 1980 MHz; frequency 2110 MHz to 2170 MHz; root-mean-square delay; urban environment; Cities and towns; Delay; Downlink; Dual band; Frequency conversion; Frequency measurement; Histograms; Land mobile radio; Large-scale systems; Radio spectrum management; Excess path loss; frequency division duplex (FDD); root-mean-square (rms) delay spread; third generation (3G); wideband code-division multiple access (W-CDMA);
Journal_Title :
Vehicular Technology, IEEE Transactions on
DOI :
10.1109/TVT.2007.900495