Vila
@vila-4EJWAr Member
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Posted #Threads
What is enhanced interior gateway routing protocol (EIGRP)
Hi everybody, What is enhanced interior gateway routing protocol (EIGRP), and when is it used in network systems? Thank you.
1 reply -
Posted #Threads
Difference between VPN and VLAN?
Hi everybody, What is the difference between Virtual Private Network (VPN) and Virtual Local Area Network (VLAN) ? When does a company/organization uses VPN and when...
2 replies -
Posted #Threads
Rayleigh fading vs Rcian fading
Hiii all, Which one is stronger? Rayleigh fading or Rician fading? I mean which one has higher/stronger effect on the transmitted signal. Thank you..
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Posted #Threads
Barker vs Gold
Hiii, Which type of PN codes is better for Direct Sequence Spread Spectrum - Barker codes or Gold codes? Thanks..
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Posted #Threads
Types of PN Codes for DSSS
Hii all, Of the following which is the best types of PN codes for Direct Sequence Spread Spectrum - Barker, walsh, gold, kasami or MLS? Thank...
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Posted #Threads
BPSK vs QPSK
Hiii all, Why is that at bad channel condition, i.e (Channel with noises present), QPSK gives higher error rate compared to BPSK, whereas at good channel...
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Posted #Threads
Worst type of Jammer for DSSS System
Hii all, For a Direct Sequence Spread Spectrum system, which is the worst type of jammer signal of these 3 jammer signal :- Pulse Jammer, Single-Tone...
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Posted #Threads
Fading effect on signal
Hiiii, In a Direct Sequence Spread Spectrum system which one have stronger effect on the transmitted signal - rayleigh fading, rician fading or gaussian noise? Thank...
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Posted #Threads
Higher bit error rate - BPSK or QPSK
Hii all, Which one has higher bit error rate, BPSK or QPSK? Lets say got two similar communication system, one uses BPSK, another uses QPSK, which...
1 reply -
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Posted #Threads
Best type of PN codes for DSSS
Hiiii all, For a direct sequence spread spectrum(DSSS) system, which type of PN codes gives the best performance - Walsh codes, Gold codes, Kasami codes or...
2 replies -
Replied #Threads
Noises in Wireless Channel
Hiii Durga, Thanks a lot for the explanation...Pulse Jammer and Single Tone jammers are type of jammers which will be sometimes present in wireless channel.
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Posted #Threads
Noises in Wireless Channel
Hiii all, In a wireless channel, can AWGN, Pulse Jammer, Single Tone Jammer, rayleigh fading and rician fading present all at once at the same channel?...
3 replies -
Replied #Threads
AWGN or gaussian noise
Hiii...thanks for the explanation. In a wireless channel, can AWGN, Pulse Jammer, Single Tone Jammer, rayleigh fading and rician fading present at once at the same...
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Posted #Threads
AWGN or gaussian noise
Hiii all, In a wireless channel, which of these 2 noise is more commonly present- AWGN or gaussian noise? I know its almost the same but...
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Posted #Threads
Evaluating Performance of DSSS System
Hiii all, In a Direct Sequence Spread Spectrum system, besides changing the types of modulator used, and adding more noises and fading to the channel, what...
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Posted #Threads
White Gaussian Noise
Hiii, Is Gaussian Noise and White Gaussian Noise (WGN) the same thing? Or got any difference? Thank you..
1 reply -
Posted #Threads
BPSK modulator in DSSS system
Hiii all, In a direct sequence spread spectrum system why a BPSK modulator is used rather than QPSK or ASK? Why not use QPSK or ASK?...
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Replied #Threads
Matlab Codes for Noise and Jammers
Hiii...yes its from the net...if A is the input signal then how about xin and yin?
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Replied #Threads
Matlab Codes for Noise and Jammers
Hiii thanks a lot, Now i have a set of coding over here but i dont know how to determine which one is the information signal...
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Replied #Threads
Matlab Codes for Noise and Jammers
It gives the same error even if i use imread() instead of gifread() Yes whole code mate, how do i define the channel_output then?
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Replied #Threads
Matlab Codes for Noise and Jammers
These are another set of codes in which it should display Rayleigh function graph: %Initialization D=1 (D = interleaving depth) clear; Ts=1/1e3; % tx rate =...
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Replied #Threads
Matlab Codes for Noise and Jammers
This program should show the effect of Gaussian filter. %%%%%%%%%%%%% The main.m file %%%%%%%%%%%%%%% clear; % Parameters of the Gaussian filter: n1=10;sigma1=3;n2=10;sigma2=3;th...
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Replied #Threads
Matlab Codes for Noise and Jammers
Hiii, Mmm well i have some codes here, its shows errors. to whom i have to show them to get rectified? Do i just post the...
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Replied #Threads
Matlab Codes for Noise and Jammers
Hiii, Gaussian, AWGN or Broadband noise, either one can do.. Thank you.
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Replied #Threads
Matlab Codes for Noise and Jammers
Hii, I need matlab codes for noise generation and also codes for broadband noise jammer. Thank you...
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Posted #Threads
Matlab Codes for Noise and Jammers
Hiiii everybody, Anyone have matlab codes for noise or jammers? I tried googling but can't find. Please help me get one. Thank you...
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Replied #Threads
Simulation for DSSS using matlab simulink
Hiiiiiii, I actually need to design DSSS Anti Jam communication system using matlab simulink. I also need to investigate the effect of changing parameters such as...
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Posted #Threads
Simulation for DSSS using matlab simulink
Hiii all, Do anyone have codes to generate Direct Sequence Spread Spectrum blocks? I mean the matlab codes to generate DSSS blocks. Or any links where...
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Replied #Threads
Convert C codes to Matlab Codes
Hiiiii, Yes its done by using the MEX file. But i dont know how to use the MEX file inside C codes to make it run...
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Replied #Threads
Convert C codes to Matlab Codes
Hiiii everybody, How do i change or convert C codes to Matlab codes? Is there any software that can convert C codes to Matlab codes? I...
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Posted #Threads
Convert C codes to Matlab Codes
Hiiii everybody, How do i change or convert C codes to Matlab codes? Is there any software that can convert C codes to Matlab codes? I...
5 replies -
Posted #Threads
Effects of antenna length and ground
hiii everybody, Please explain the effects of antenna length and ground on the radiation resistance of a wire antenna. Thank you....
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Posted #Threads
Directivity and radiation resistance
Hiiiiiii all, How does the directivity and radiation resistance of a monopole antenna compare with that of a half-wave dipole? Thank you....
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Posted #Threads
Probe-Long-Term in Anti Jam Communication System
Hiiii everybody, Why do we need a Probe-Long-Term in Anti Jam Communication System? It connects the side information to the channel. Someone please explain. Thank you..
1 reply -
Posted #Threads
Matched Filter
Hiiiii alll, What is a Matched Filter and what it does?? How about an Integrator? Are they the same? Thank you
2 replies -
Posted #Threads
PN code Synchronization
Hiiii everybody, In a Spread Spectrum communication system, the pn code used by the receiver must be same and synchronized with the pn code used by...
3 replies -
Posted #Threads
Matched Filter and Integrator
Hiiiii alll, What is a Matched Filter and what it does?? How about an Integrator? Are they the same? Thank you
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Replied #Threads
Coherent detector in DSSS
Hiiiii sir, Thanks for the explaination. What actually an interleaver does? Why it scrambles the order of data sequence? And why we need it in an...
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Replied #Threads
Coherent detector in DSSS
[FONT=verdana, arial, helvetica]Hiiii all Where is Direct Sequence Spread Spectrum (DSSS) used?? I mean the application of DSSS. Thank you.....[/FONT]
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Replied #Threads
Coherent detector in DSSS
[FONT=verdana, arial, helvetica]Hiiii all, Why must we use a coherent detector in direct sequence spread spectrum (DSSS) system? Also why must specifically use BPSK modulator in....
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Replied #Threads
Additive White Gaussian Noise
Hiiiii, Thanks a lot dude, now i understand how it works...
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Posted #Threads
Coherent detector in DSSS
Hiiii alll, Why must we use a coherent detector in direct sequence spread spectrum (DSSS) system? And is there possibility of us using other types of...
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Replied #Threads
Partial-Band Noise Jammer, CW and Multitone Jammers
Hiii, My system is Direct sequence spread spectrum (DSSS). Does these jammers affects DSSS? Where and when the each type of jammers are used? How about...
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Posted #Threads
Partial-Band Noise Jammer, CW and Multitone Jammers
Hiiii everybody, Do anyone know how Partial-Band Noise Jammer, CW and Multitone Jammers work? Where and when the each type of jammers are used? Someone please...
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Replied #Threads
Additive White Gaussian Noise
Hiiiiii, Hi Ash, thanks a lot for your reply and explaination. Now i understand better, but could you explain more on AWGN? What you mean by...
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Posted #Threads
Additive White Gaussian Noise
Hiii everybody, What is the difference between White Noise and White Gaussian Noise? And what is Additive White Gaussian Noise? I have refer to wikipedia, google...
4 replies
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