Abstract: Disclosed is a noise communication system and method. The noise communication system comprises a transmitter and a receiver. The transmitter indexes through at least two noise records which comprise a series of randomly generated samples, the noise records being divided into noise segments, to maintain a current noise segment for each noise record. The transmitter modulates a predefined base signal using the segments of the noise records to represent the symbols of the base signal. In modulating the predefined base signal, the transmitter replaces the respective symbols of the base signal with the current noise segments from the noise records, thereby generating a noise signal in which the symbols can not be discerned. The noise signal is transmitted across a communications channel to the receiver which demodulates the noise signal into the base signal. The demodulation employs a number of correlators that equals the number of noise records employed at the transmitter.

Abstract: A cell engineering tool (10) evaluates wireless communications channels within and around architectural structures, such as buildings, in order to determine communications transfer characteristics, including the RMS signal power level and the complex-valued frequency-domain transfer function H(f) of the communications channel. In architecture, the CET (10) comprises a user interface (12) and an analysis engine (14) communicating with the user interface (12). The analysis engine (14) has a plurality of propagation models (16), which may be run concurrently for validation, if desired. Using the user interface (12), which is preferably a graphics mechanism, the user (18) inputs a floor plan, wall material parameters (conductivity, permittivity), and the location of a transmitter (53) and receiver (54) within the floor plan. The analysis engine (14) analyzes the input parameters and uses one or more of the propagation models (16) in order to derive a CET output.