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Dynamic spectrum access is an effective approach to improve the spectrum utilization. When primary user (PU) leases its spectrum to secondary users (SU), the spectrum efficiency can be enhanced, however, PU might be interfered by the co-existence of SU. This paper considers the situation that PU is willing to coexist with SU once it is paid and its Signal to Interference-plus-Noise Ratio (SINR) is...
In this paper, a nonlinear modified constant modulus algorithm (NMCMA) is proposed by applying a nonlinear transfer function (NTF) into modified constant modulus algorithm (MCMA), where the NTF makes the decision region of its cost function sharper so that NMCMA is more robust against the convergency error. The single layer in NMCMA simultaneously guarantees a comparably speedy convergency. Computer...
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