... systems. The standards specify air interfaces basedupon both wideband CDMA (W-CDMA) and wideband TDMA. How-ever, since W-CDMA is the preferred interface, we have chosen todeal with W-CDMA and more ... again the shift reg-Rxy1j2 ϭaNiϭ1xiyiϩjChapter 3862468 -2 - 4- 6 - 8C(j)15Figure 3-1 7The auto-correlation functionof a maximallength sequenceister of Figure 3-1 6. However, this ... selectedoutputs are added modulo 2 and fed back to the input. The underly-ing theory is well documented in the literature. See, for example, ref-erence [14] for a thorough description of shift...