In many developing countries there is a tremendous demand for new telephone services, whether commercial or residential. Increasingly, operators are looking to wireless technologies to provide thousands of new subscribers high-quality services at reasonable prices.
Operators can extend their existing wired networks with Wireless Local Loop (WLL) or fixed wireless access, while cellular operators can capitalize on their current networks with WLL providing residential services. This would be the case that Telcel has obtained licenses to provide fixed wireless services throughout the country. But they can also use the spectrum currently have (in this case in the 800MHz band) to provide fixed services, with CDMA technology.
The new service providers can quickly deploy WLL nontraditional solutions to meet the communications needs of communities. The unique features and benefits of using CDMA technology make this a significant choice for both mobile and fixed wireless systems. In a fixed environment, it is estimated that CDMA provides between 15 and 20 times the capacity of AMPS cellular systems, of long standing, with the resulting offered the highest capacity, cellular-based WLL applications.
The key to this increased capacity is obtained is that, in a fixed environment, the system of CDMA power control is able to monitor very accurately the energy requirements, resulting in energy savings and an increased capacity transmission . Subscribers in a fixed environment require less power radio communications to achieve quality, so that more users can be placed in a single transmission channel. In addition, CDMA optimizes the use of radio spectrum, which is a scarce resource.
The ability to reuse the frequency of one cell and requiring bandwidth is not contiguous with its extensive range of coverage, simplify the planning and implementation of radio frequency. This allows operators to invest less in cells and deploy them faster, thus reducing the time to begin receiving revenues from the service.
