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Description: ARMboot is a firmware monitor/bootloader for embedded systems based
on ARM or StrongARM CPUs-ARMboot is a firmware monitor / Bootloader for embedded systems based on ARM or StrongARM C PUs
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Size: 610146 |
Author: huanxui |
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Description: ARMboot is a firmware monitor/bootloader for embedded systems based
on ARM or StrongARM CPUs-ARMboot is a firmware monitor/Bootloader for embedded systems based on ARM or StrongARM C PUs
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Size: 610304 |
Author: huanxui |
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Description: web套打,发票套打程序，只要稍加调整，改进一下，即可用于发票打印-web套打, invoices套打procedures, as long as some adjustments to improve the look can be used to print invoices
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Size: 80896 |
Author: zhaohongda |
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Description: Cognitive radio frequency spectrum detection-The spectrum sensing of a wideband frequency range is studied by dividing it into multiple subbands.
It is assumed that in each subband either a primary user (PU) is active or absent in a additive white Gaussian
noise environment with an unknown variance. It is also assumed that at least a minimum given number of
subbands are vacant of PUs. In this multiple interrelated hypothesis testing problem, the noise variance is
estimated and a generalised likelihood ratio detector is proposed to identify possible spectrum holes at a
secondary user (SU). Provided that it is known that a specific PU can occupy a subset of subbands
simultaneously, a grouping algorithm which allows faster spectrum sensing is proposed. The collaboration of
multiple SUs can also be considered in order to enhance the detection performance. The collaborative
algorithms are compared in terms of the required exchange information among SUs in some collaboration
methods. The simulation results show that the propos
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Size: 231424 |
Author: phillis |
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Description: LTE PUSCH参考信号生成，可以参考LTE协议
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Size: 1024 |
Author: Chen Qingyong |
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Description: Resistance in labview tank level
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Size: 196608 |
Author: trot |
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Description: Unlike traditional MIMO systems, SUs may not have
the luxury of knowing the channel state information (CSI)
on the links to PUs. This presents a key challenge for a
secondary transmitter to steer interference away from primary
receivers. In this paper, we consider three scenarios,
namely when the secondary transmitter has complete,
Platform: |
Size: 224256 |
Author: kgmark |
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Description: users and link gains generation
FIXED POWER FOR EACH SU LINK NO POWER CONTROL FOR SUs
WITH ON OFF activity for PUs and SUs
d_00=start of franhaufer zone d_0=radius of cell, d_su=radius of pairwise adhoc N/W
- users and link gains generation
FIXED POWER FOR EACH SU LINK NO POWER CONTROL FOR SUs
WITH ON OFF activity for PUs and SUs
d_00=start of franhaufer zone d_0=radius of cell, d_su=radius of pairwise adhoc N/W
Platform: |
Size: 1024 |
Author: Joydev Ghosh |
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Description: While the required reliability of the sensing
process can be expressed in terms of rarely enough overlooking the PU, we assume that the proper QoS for the SU is given by maintaining — with a given confidence level — a minimum
bandwidth availability for the SU in spite of PU dynamics. In this paper we present an overview of approaches which might be used
to achieve these objectives. In addition we point out, that both the sensing process and the secondary link maintenance (necessary to keep the required bandwidth in spite of e configuration due to detected PUs) require a significant spectrum overhead. We identify and elaborate a fundamental tradeoff in using these
overheads in either sensing or link maintenance, and present examples of its optimization.
Platform: |
Size: 189440 |
Author: isaacmu |
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Description: CR [1] is a promising solution to the problem of spectrum
scarcity in wireless communications. The basic idea of CR is
to allow secondary (unlicensed) users (SUs) to opportunistically
utilize the spectrum of PUs (licensed), provided that the
SU transmission do not harmfully affect the PUs. In this paper,
we focus on the underlay CR approach, where the SUs access
the spectrum occupied by the PUs, given that the interference
they cause to the PUs is less than a certain threshold such that
the Quality-of-Service (QoS) of the PUs can be ensured
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Size: 1024 |
Author: asmaa |
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Description: 这是对6—PUS并联机器人的运动学仿真及运动轨迹跟踪-This is the kinematics simulation and trajectory tracking of the 6-PUS parallel manipulato
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Size: 8192 |
Author: wangyucheng |
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Description: http文件共享服务器源码 ,学习http文件共享服务器不错的例子()
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Size: 37888 |
Author: poadse
|
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Description: In this paper, power control algorithm using Iterative Partitioned Water Filling (IPW) are performed for CR network with multiple PUs and SUs under opportunistic spectrum access mode.
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Size: 861184 |
Author: ririe_hehehe
|
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Description: 频谱感知需要的认知无线电中顺序，寻找机会频谱的灵活使用。此外，它是干扰的管理造成水平的关键向初级用户 （PUs） 的频谱。遥感提供了
无线电操作环境的意识。认知电台可然后适应它的参数如载波频率电源和波形动态调整提供最好的服务可用的连接，以满足用户的需求范围内
对干扰约束。无线通信系统中，我们通常有一些对波形的知识和结构或统计属性的信号的频谱的主要用户使用。这种知识可能相关的调制
计划、 符号或芯片的信号，通道的速率。(Spectrum sensing requires the order of cognitive radio, looking for flexible use of opportunistic spectrum. In addition, it is the spectrum that disturbs the level of management caused by primary users (PUs). Remote sensing provides awareness of the radio operating environment. Cognitive stations can then adapt to its parameters such as carrier frequency power and waveform dynamics to provide the best service available to connect to meet user constraints on interference requirements. In wireless communication systems, we usually have some primary users who have knowledge of the waveform and the spectrum of the signal of the structure or statistic properties. This knowledge may be related to the modulation scheme, symbol or chip signal, channel speed.)
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Size: 12288 |
Author: 晓骸 |
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