Wi-Fi pollution, or an excessive number of access points in the area, especially on the same or neighboring channel, can prevent access and interfere with the use of other access points by others, caused by overlapping channels in the 802.11g/b spectrum
标签： especially pollution excessive the
上传时间： 2017-07-29
上传用户：我们的船长
Capabilities of the latest version of MultiSpec include the following. Import data Display multispectral images Histogram Reformat Create new channels Cluster data Define classes via designating rectangular Determine the best spectral features Classify a designated area in the data file List classification results
标签： Capabilities MultiSpec following the
上传时间： 2013-12-01
上传用户：源码3
The UMTS Physical Layer model consists of an end-to-end (transmitter-to-receiver) simulation of the Frequency Division Duplex (FDD) Downlink physical layer for several Dedicated channels (DCH) as specified by the 3GPP standard (Release 99).
标签： transmitter-to-receiver end-to-end simulation Physical
上传时间： 2014-01-10
上传用户：it男一枚
Source code of Radio Control Nikon Digital Camera Shutle. Using for Fly RC Aircraft with Nikon D40,D70,D80,D90 Models. It work with 1 free channels of RX on board of fly model.
标签： Nikon Aircraft Control Digital
上传时间： 2013-12-12
上传用户：xinyuzhiqiwuwu
A MATLAB program has been written to investigate Orthogonal Frequency Division Multiplexing (OFDM) communication systems. This program is valuable for future researchers simulating systems that are too theoretically complex to analyze. Single-carrier QAM and multicarrier OFDM are compared to demonstrate the strength of OFDM in multipath channels. Two graphical user interface demonstrations show some of the basic concepts of OFDM.
标签： Multiplexing investigate Orthogonal Frequency
上传时间： 2013-12-08
上传用户：redmoons
msp430The LDC1312 and LDC1314 are 2- and 4-channel, 1• Easy-to-use – minimal configuration required 12-bit inductance to digital converters (LDCs) for • Measure up to 4 sensors with one IC inductive sensing solutions. With multiple channels • Multiple channels support environmental and and support for remote sensing, the LDC1312 and aging compensation LDC1314 enable the performance and reliability benefits of inductive sensing to be realized at minimal• Multi-channel remote sensing provides lowest cost and power. The products are easy to use, onlysystem cost requiring that the sensor frequency be within 1 kHz • Pin-compatible medium and high-resolution and 10 MHz to begin sensing. The wide 1 kHz to 10 options MHz sensor frequency range also enables use of very small PCB coils, further reducing sensing– LDC1312/4: 2/4-ch 12-bit LDC solution cost and size.– LDC1612/4: 2/4-ch 28
上传时间： 2016-07-22
上传用户：tongmoonsky
介绍衰落信道中的数字通信原理及技术。作者：Marvin K. Simon和Mohamed-Slim Alouini。感觉内容深入浅出，适合作为无线通信方向的硕士或博士研究生的参考书。
标签： Communication channels Digital Fading over
上传时间： 2018-05-20
上传用户：lzhxjd
Description The L9352B is an integrated quad low-side power switch to drive inductive loads like valves used in ABS systems. Two of the four channels are current regulators with current range from 0 mA to 2.25 A. All channels are protected against fail functions. They are monitored by a status output.
标签： L9352B
上传时间： 2019-03-27
上传用户：guaixiaolong
Abstract—In the future communication applications, users may obtain their messages that have different importance levels distributively from several available sources, such as distributed storage or even devices belonging to other users. This scenario is the best modeled by the multilevel diversity coding systems (MDCS). To achieve perfect (information-theoretic) secrecy against wiretap channels, this paper investigates the fundamental limits on the secure rate region of the asymmetric MDCS (AMDCS), which include the symmetric case as a special case. Threshold perfect secrecy is added to the AMDCS model. The eavesdropper may have access to any one but not more than one subset of the channels but know nothing about the sources, as long as the size of the subset is not above the security level. The question of whether superposition (source separation) coding is optimal for such an AMDCS with threshold perfect secrecy is answered. A class of secure AMDCS (S-AMDCS) with an arbitrary number of encoders is solved, and it is shown that linear codes are optimal for this class of instances. However, in contrast with the secure symmetric MDCS, superposition is shown to be not optimal for S-AMDCS in general. In addition, necessary conditions on the existence of a secrecy key are determined as a design guideline.
标签： Fundamental Limits Secure Class on of
上传时间： 2020-01-04
上传用户：kddlas
This book presents, in a unitary and novel perspective, some of the research work the authors have carried out over the last decade, along with several collaborators and students. The roots of this book can be traced back to the design of adaptive sequence detection algorithms for channels with parametric uncertainty. The explosion of turbo codes and iterative decoding around the middle of the Nineties has motivated the design of iterative (turbo and graph-based) detection algorithms.
标签： Communications Algorithms Detection Wireless for
上传时间： 2020-05-26
上传用户：shancjb
