sure that the serving antenna face has enough capacity to serve the traffic at the chosen blocking rate. The suite of 3G services makes this job more challenging. We have to add up the variety of voice and data services and any Real systems may have more pilot pollution simply because we cannot get perfect grid locations for base stations. 6The carrier may not be lower in frequency, just lower in our F1, F2, F3 list. Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright © 2004 The McGraw-Hill Companies. All rights reserved. Any use is subject to the Terms of Use as given at the website. Base Station Planning Base Station Planning other services we think subscribers will want and make sure that each cell sector can handle the load. We therefore compute the peak traffic for each cell sector based on the forecast time-of-day distributions of each service. We map out the hours of the day and total the demand for each hour. Different-sized services can be compared using the gross chip rate we used in Chap. 31. Voice service may be busy at commuting times, whereas data service may reach its peak at lunchtime, so it is important to develop and forecast a clear picture of each service for each hour of the day. We inspect all hours of the day to be sure that we know which time of day is the peak-demand period. When we have the peak hour demand, we take a close look to make sure that it is our best estimate. Neighboring cells and sectors have their own CDMA activity in each carrier fre- quency. These are the f and g terms we used in Eqs. (30.1) and (30.2). We use f to rep- resent the total interfering power received from other cells, and we use g to represent the total interfering power received from other sectors in the same cell, both com- pared to the serving sector. In Sec. 30.7 we assumed values of f = 0.5 and g = 0.3 except for the forward link of TD-SCDMA, where we assumed a higher value of f = 2.0. We expect our total capacity to be reduced by a factor of 1 + f + g 