
Cellular Telephony: Wireless Roaming Pioneers
noise load for each cell that is involved. Therefore, CDMA system operators must optimize
the size of handoff zones by various techniques including adjusting the transmission strength
of base-station pilot (beacon) signals, prioritizing the list of neighboring cells that the MSC
considers for handoff, and by minimizing environmental or system factors that contribute to
the overall noise level in the cells [23].
Although second-generation digital systems showed significant improvements in capacity,
security, and data handling capability over the analog systems that they replaced, the 2G
systems are still