Advances in digital communications have made it possible to access the Internet by simply
plugging your computer to the wall socket in your home. Power line communications (PLC) …

A simple and efficient bit loading algorithm for orthogonal frequency division multiplex-
based systems in frequency selective environments is presented here. The proposed …

The demand for wireless networks has been growing rapidly over the recent past due to
improved reliability, higher supported data rates, seamless connectivity between users and …

Adaptive bit-loading algorithms can improve the performance of OFDM systems significantly.
The tradeoff between the algorithms performance (optimum solution) and the computational …

摘要OFDM 自适应调制技术根据各子载波在频率选择性衰落信道中不同的瞬时增益,
动态地分配数据比特和发射功率, 可以优化系统性能, 提高频谱效率. 该文主要研究OFDM …

The function of the Radio Resource Management module of a Cognitive Radio (CR) system
is to evaluate the available resources and assign them to meet the Quality of Service (QoS) …

In traditional half duplex cognitive radio networks, secondary users can only sense the
spectrum or transmit at a given time. This kind of half duplex network limits the throughput of …

摘要针对当前业务量预测方法过于理想化, 预测准确度不高等问题, 根据现网业务量特征提出了
一种基于乘积季节自回归求和移动平均(S-ARIMA) 模型的业务量预测方法 …

In this paper, we evaluate and compare the robustness of several adaptive bit loading
algorithms for multicarrier transmission systems, when imperfect subcarrier signal-to-noise …

设计了一种基于共源结构的两级级联超宽带低噪声放大器. 该低噪声放大器采用了源端电感和四
分之一阻抗变换器, 在不恶化电路噪声系数的情况下具有较好的输入匹配. 通过使用GaAs …