Network and Co-Site Interference Reduction for Spread Spectrum Multichannel

Tactial Multichannel Communication Systems of the 1990's will require the use of secure spread spectrum techniques. The use of ECCM techniques entails that the communication system be designed from a network point of view, to insure non-interfering operation. Spread spectrum transmission is examined in light of interference reduction techniques both from a network and a co-location point of view. It is shown that a combination of Time Division Duplexing, frequency hopping, forward error correction coding, CPFSK modulation, and synchronized transmission will provide a non-interfering solution. The use of automated frequency management, hosted on a personal computer, enhances the performance of this system especially when the frequency allocation is limited or the network topology is not a mesh. This work was performed on an internal research project for the Canadian Marconi Company.