/No. Pi may also denote the traffic channel ERP aimed for MS i but captured by the desired MS. Then (7.13) When a MS measuring E/No finds itself among many other MSs and many other cells, there is an additional interference term It, i.e. the total traffic channel power received from all other BSs. It can be defined as: (7.14) where Pk is the total traffic channel ERP from BS k. Thus, I represents the sum of all traffic channel powers receive by the desired MS from all other BS, but excluding its own. K is the total number of cells or sectors in the system under consideration. We can define Pk as R==P. (7.15) The Pk expression indicates that, for each BS k, we sum the forward traffic channel ERPs for all MSs corresponding to that BS k. The expression also implies that P' is the traffic channel power aimed to MS j but cap- tured by the MS calculating Eb/No. Jk is the total number of MS served by BS k. Then Eb/No for the MS among many MS within many cells can be defined as: (7.16) This latter expression will be the most likely environment when calculating the forward link budget. Deploying 3G Networks 7.6.6.2 The Reverse Link In the reverse link or uplink, i.e. MS to BS connection, a single cell serving a single MS has the following Eb/No expression: (7.17) where PR is the reverse traffic channel ERP of the desired MS assuming an omnidirec- tional transmit pattern, LR is the reverse path loss from the desired MS in the direction of Oo to the home BS at given distance, AGR is the receive antenna gain of the home BS in the direction of Oo to the desired MS, InR is the power received at the home BS from other interference from non-CDMA sources. When considering a single cell with many mobiles one BS serves many MSs, and the MS measuring Eb/No gets extra interference (ImR), which can be expressed as: (7.18) where PRj corresponds to the reverse traffic channel ERP of MS j, LRj is the reverse path loss from MS j in the direction of Oj back to the home BS at given distance, AGR is the receiver antenna gain of the home BS i