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Cyclostationary feature (CSF) detection plays an important role in spectrum sensing for cognitive radio systems, since it has low requirements on a-priori knowledge about the primary user signals and high robustness to noise and interferences. Existing CSF detecting technologies depend on full-size Fast Fourier Transform (FFT), which leads to high implementation cost in case of high carrier frequency...
Femtocells that share the same spectrum with macrocells can enhance wireless coverage and system capacity. However, cross-tier interference between femtocells and macrocells complicates the process of two-tier network planning. In the network planning, interference margin (IM) is a key parameter for the link budget to indicate the impact of interference and calculate the cell coverage. The conventional...
In the planning of cellular networks, link budget calculation is the first step to get the maximum allowable cell radius that guarantees a target signal to interference plus noise ratio (SINR) with a certain level of outage probability at the cell border. The interference margin as one of key inputs for link budget is used to compensate for co-channel interference. In this paper, a mathematical analysis...
Due to the imperfection of transmitter and receiver, Adjacent Channel Interference (ACI) can't be completely avoided when two systems share the adjacent frequency band. This paper investigates the impact of ACI between TD-SCDMA and TD-HSDPA systems operating in macro cell. In stimulation, smart antenna technology is employed and its performance is investigated. Furthermore, the key technologies, Adaptive...
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