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In face of the explosive service demands, solving the problem of spectrum scarcity is becoming more important than ever. To utilize the spectrum resources more thoroughly and efficiently, virtualization technologies have been proposed, which can be a means to mitigating resource granularity and increasing efficiency in heterogeneous network environments. In this paper, a traffic-oriented resource...
Automatic modulation classification (AMC) acts as a critical role in cognitive radio network, which has many civilian and military applications including signal demodulation and interference identification. In this paper, we explore a novel feature based (FB) AMC method using multi-gene genetic programming (MGGP) and multinomial logistic regression (MLR) jointly with spectral correlation features...
To successfully deploy multi femtocells in public places, the interference between femtocells must be mitigated. However, some unique features of femtocells present a challenge in interference mitigation, such as complex indoor wireless environment and short distance between femtocells. In this paper, a novel low cost cognitive enabled multi-element antenna solution is proposed to reduce the intra-tier...
In the future B3G/4G communication systems, it is of broad prospect to implement the femtocell in the enterprise offices or other public places. However, the femtocell operations under such environment are significantly different from the macrocell as well as the usual residential femtocell, and the configuration and optimization are more complex. Although there have been a few works studying the...
In future B3G/4G communication systems, the special application of femtocell in the enterprise offices and public places has broad prospect. However, as the femtocell operation under such multi-femtocell environment is significantly different from that of usual residential femtocells, the femtocell configuration and optimization might be much more complex. One key issue is to find how will the femtocell...
Recently, femtocell has been proposed as a good solution to increase the coverage area and capacity of the wireless communication system as well as meet the increasing demand for high data rate. The femtocell is low-cost, low-power and can be realized by deploying a femto-base-station connected to the core network via a wired-backhaul. Since the femtocell reuses the macrocell spectrum, co-channel...
Femtocell, which is also referred to as "Home NodeB" (HNB), is proposed as one of the best complementary approaches for the future wireless communication. It's a low-power, lowcost cellular base station designed to serve a very small area, such as home or office. The scenario where there are several femtocells coexisted is discussed in this paper, which corresponds to the public place such...
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