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Multi-user detection (MUD) techniques will be adopted in the future wired and wireless communication system. It is known that quantum detection techniques promise efficient optimal solutions to this NP (non-polynomial) hard problem in classical domain. "Discrete coherent state"(DCS) approximation method is a practical model for solving the mixed-state detection problem. In this paper, we...
Quantum detection techniques based on multi-access quantum channel promise efficient quantum optimal solutions to quantum multi-user detection. "Discrete coherent state"(DCS) approximation method is a practical model for solving the mixed-state detection problem. Generally, the input states are pure states, while the output states are turned out to be mixed states corrupted by the noise...
Covariance shaping least squares estimator is a new kind of linear estimator based on covariance shaping in quantum signal processing (QSP) framework. In this paper, the covariance shaping least squares (CSLS) estimator is applied to multi-user detection that leads to a new detection algorithm, covariance shaping multi-user detection algorithm. The numerical simulations in synchronous DS-CDMA communications...
It is suggested that a type of artificial neural network can be built using the principles of quantum information processing. A new technique for the recognition of noisy English letter using quantum neural network is proposed in this paper. A qubit neuron model based on quantum mechanics, constructed the quantum back propagation learning rule network (QBP) is given, and a high reliability has been...
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