Es. Warner et al., CONTROL OF THE SPECTRA OF DS-SS SPLIT SIGNALS BY INTERLEAVING, IEE proceedings. Radar, sonar and navigation, 142(4), 1995, pp. 206-210
Direct-sequence spread-spectrum transmissions are increasingly employe
d in terrestrial radio-location systems to minimise interference with
narrowband communications services in shared bands. Further flexibilit
y in band planning is afforded by a scheme proposed recently to genera
te from the high-rate sequence an integral number of lower-rate, narro
w-bandwidth, 'split-signal' sequences which are transmitted in availab
le gaps in the spectrum. The paper shows that the bandwidth and power
density of the transmission may be further controlled by overlapping o
r interleaving the spectra of the split signals without unacceptable d
egradation of positioning performance due to their mutual interference
.