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Any continuous-time analogue signal can be converted into a digital signal by making discrete both the time and the amplitude axes. The process of making the amplitude axis discrete is called quantization. It consists of dividing the amplitude axis in contiguous intervals and in associating to all the amplitudes within any interval a single amplitude value chosen among them. A regenerator receives the incoming pulse stream and transmits a new regenerated pulse stream that replicates the original sequence as closely as possible. To regenerate the signal, timing information must be known so that the regenerated pulse stream can be transmitted with the proper intervals between the pulses.

The views expressed in this chapter are those of the authors and do not necessarily reflect the views of their affiliation entity. [ABSTRACT FROM PUBLISHER]

Chapter Six covers a channel model analysis based on a series of measurements carried out at 2GHz designed to characterize a wide band WLL in a range of environments; An experimental procedure used in two measurement campaigns; The data processing stages used to determine the channel parameters; The channel model used. [ABSTRACT FROM PUBLISHER]

Chapter 10 focuses on the indoor system of BRAIN, a mm-waveband high-speed multimedia wireless LAN. It discusses the architecture and design of the prototype; a description of a wireless MAC protocol; the configuration and implementation of the system. [ABSTRACT FROM PUBLISHER]

Chapter 11 proposes a private branch exchange (PBX) based mobility manager for WLL, which allows users to receive wireless service at any location within the WLL service area. [ABSTRACT FROM PUBLISHER]

The article presents information about the January 1, 2004 issue of the journal CDMA: Access and Switching. Code division may be considered as a generalized method for access and switching in communication networks. Such an approach may be viewed as a user encoding process where the choices of the code and spreading types can create a large set of access and switching techniques in which the traditional ones are included. In this sense, code division can provide a unified approach for multiple access and switching in communications.