Discuss space-diversity antenna separation (1) for a cell site and (2) for a mobile platform. The example should be for the 900-MHz band ? Where would we use an interleaver and how does it work? Often cells and cell site transmitter-antenna parameters are built around a signal level contour. What is the value of this contour in dBµ? Also give this dBµ value in dBm based on a 50 - Ω impedance at 850 MHz.