Cost evaluation and architectures for access network using cable systems and radio systems

Abstract

AbstractIn recent years, telecommunications technology has progressed rapidly, resulting in digital intelligent networks and cheap miniaturized terminals with high functionality. The main constraint on the ability to offer various services at inexpensive rates is the ability to economically construct access networks. The cost of constructing access networks can be reduced by using transmission technologies such as optical fiber and radio, multiplexing, and channel assignment, which have recently made remarkable advances. The total cost can be reduced by optimizing the elements of the access system, if it is assumed that these technologies can be attained economically. The cost of underground transmission infrastructures accounts for a large proportion of the total cost, so it is an important factor in trying to reduce access network costs, given the strong preference of the public for underground cables. Furthermore, combining optical fiber systems and radio systems is an effective solution and application of this method from the viewpoint of required frequency bandwidth is considered.