【摘 要】
：
This letter presents two preprocessing techniques for narrow-band interference (NBI) rejection in Time-Division-Duplex (TDD) CDMA systems.In the proposed method
【机 构】
：
Dept.of Electrical Engineering
论文部分内容阅读
This letter presents two preprocessing techniques for narrow-band interference (NBI) rejection in Time-Division-Duplex (TDD) CDMA systems.In the proposed methods,at the transmitter,by using Karhaunen-Loeve Transform and Discrete Fourier Transform,the transmitted power is set to zero in the directions of the eigenvectors that will be severely contaminated by NBI; and therefore less part of the transmitted energy will be polluted by NBI in channel.The processing is transferred from receiver to transmitter,and thus the complexity of the receiver is significantly reduced.It is assumed that channel state information can be estimated at the transmitter because in symmetric TDD systems each receiver in turn also acts as a transmitter.
其他文献
Effects of tetracarbon additives, 1-butanol, 1,4-dioxane and tetrahydrofurane on gibbsite precipitation from caustic seeded sodium aluminate liquor were investi
Under the complicated electromagnetism circumstance,the model of data fusion control and guidance of surface-to-air missile weapon systems is established.Such w
Artificial neural network procedures were used to predict the combustible value (i.e. 100-Ash) and combustible recovery of coal flotation concentrate in differe
首先分析总结理想情况下雷达方程及其相应参数的求取,研究了有源干扰方程、无源干扰方程、接收机噪声方程及其参数的求取,详细推导了频谱系数.在此基础上,给出复杂电磁环境下
Nickel-based composite coatings reinforced by in situ synthesized TiB2 and WC particles were deposited on stainless steel by laser cladding,and their microstruc
根据不同时期的Landsat TM卫星遥感图像,分别提取海南坡鹿Cervus eldi hainanus栖息地海南大田国家级自然保护区及周边地区的归一化植被指数(Normalized Difference Vegetati
In order to improve reliability of the excavators hydraulic system, a fault detection approach based on dynamic principal component analysis(PCA) was proposed.
A novel robust fault diagnosis scheme,which possesses fault estimate capability as well as fault diagnosis property,is proposed.The scheme is developed based on
以汉江流域为研究区,在GIS技术支持下,应用分布式模型SWAT(Soil and Water Assessment Tool)进行了流域产水产沙模拟.采用1987-1996年的资料进行模型率定,1997-2001年的资料
Metal and nano-ceramic nanocomposite coatings were prepared on the gray cast iron surface by the electredeposition method. The Ni-Co was used as the metal matri