Vila

Vila

Member

Member since
Jul 17, 2008
Last active
Feb 19, 2010
Total activities
0

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Recent contributions

  1. #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.

  2. #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...

  3. #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....

  4. #Threads

    Barker vs Gold

    Hiii, Which type of PN codes is better for Direct Sequence Spread Spectrum - Barker codes or Gold codes? Thanks..

  5. #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,...

  6. #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,...

  7. #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...

  8. #Threads

    284f17d8-9206-4b48-8565-70b9c4596fff

    Thank you...

  9. #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...

  10. #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,...

  11. #Threads

    d3090ab7-71db-4a62-b6c3-80f841e38e47

    Yeap i am into wireless communications...

  12. #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...

  13. #Threads

    8cc70db3-0b72-4625-a475-39369f77d79b

    Hiii Durga, Thanks a lot for the explanation...Pulse Jammer and Single Tone jammers are type of jammers which will be sometimes present...

  14. #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...

  15. #Threads

    93b7df9f-8312-45ca-9e6c-6bfc36c3bb86

    Hiii...thanks for the explanation. In a wireless channel, can AWGN, Pulse Jammer, Single Tone Jammer, rayleigh fading and rician fading present at...

  16. #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...

  17. #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...

  18. #Threads

    White Gaussian Noise

    Hiii, Is Gaussian Noise and White Gaussian Noise (WGN) the same thing? Or got any difference? Thank you..

  19. #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...

  20. #Threads

    ba2fe0ef-673e-47f2-b671-e2691a7220c2

    Hiii...yes its from the net...if A is the input signal then how about xin and yin?

  21. #Threads

    081dafba-6d32-487c-82da-211c6d01fec6

    Hiii thanks a lot, Now i have a set of coding over here but i dont know how to determine which one...

  22. #Threads

    6b6ee354-f495-41a2-8853-a03301b93ac4

    It gives the same error even if i use imread() instead of gifread() Yes whole code mate, how do i define the...

  23. #Threads

    1c988b5e-d436-4484-88a9-6e936d7323c7

    These are another set of codes in which it should display Rayleigh function graph: %Initialization D=1 (D = interleaving depth) clear; Ts=1/1e3;...

  24. #Threads

    19da313d-fad4-4653-bd6e-1c13cbef5bbc

    This program should show the effect of Gaussian filter. %%%%%%%%%%%%% The main.m file %%%%%%%%%%%%%%% clear; % Parameters of the Gaussian filter: n1=10;sigma1...

  25. #Threads

    5ef08ae0-6504-4731-a8d1-d1d2f6bb7b3f

    Hiii, Mmm well i have some codes here, its shows errors. to whom i have to show them to get rectified? Do...

  26. #Threads

    c0529ede-c334-4a32-a3ff-e00064363117

    Hiii, Gaussian, AWGN or Broadband noise, either one can do.. Thank you.

  27. #Threads

    6b33f23e-37b5-4dbd-8544-3c50768807e7

    Hii, I need matlab codes for noise generation and also codes for broadband noise jammer. Thank you...

  28. #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...

  29. #Threads

    7b8b76fa-f2c5-43a4-8d44-677abb7076b4

    Hiiiiiii, I actually need to design DSSS Anti Jam communication system using matlab simulink. I also need to investigate the effect of...

  30. #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....

  31. #Threads

    9348981a-a7bb-4c37-8dc2-b49968bde410

    Hiiiii, Yes its done by using the MEX file. But i dont know how to use the MEX file inside C codes...

  32. #Threads

    425e9606-b500-496e-baf3-c2ae6a815584

    Hiiii everybody, How do i change or convert C codes to Matlab codes? Is there any software that can convert C codes...

  33. #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...

  34. #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....

  35. #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....

  36. #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...

  37. #Threads

    Matched Filter

    Hiiiii alll, What is a Matched Filter and what it does?? How about an Integrator? Are they the same? Thank you

  38. #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...

  39. #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

  40. #Threads

    c2dc6b6e-0c73-439a-acfd-6c55687d3f60

    Hiiiii sir, Thanks for the explaination. What actually an interleaver does? Why it scrambles the order of data sequence? And why we...

  41. #Threads

    691c0aeb-48c7-41da-a1af-931205d67580

    [FONT=verdana, arial, helvetica]Hiiii all Where is Direct Sequence Spread Spectrum (DSSS) used?? I mean the application of DSSS. Thank you.....[/FONT]

  42. #Threads

    c5d8c5bd-cadc-4625-9588-6cb736439951

    [FONT=verdana, arial, helvetica]Hiiii all, Why must we use a coherent detector in direct sequence spread spectrum (DSSS) system? Also why must specifically...

  43. #Threads

    8997a39b-aea6-47b7-b8e9-4e69f9daeacf

    Hiiiii, Thanks a lot dude, now i understand how it works...

  44. #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...

  45. #Threads

    c240a894-bc89-4211-a700-e0bafbbac807

    Hiii, My system is Direct sequence spread spectrum (DSSS). Does these jammers affects DSSS? Where and when the each type of jammers...

  46. #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...

  47. #Threads

    39e1f3f6-de61-4be9-bcb2-946b3eb32f7d

    Hiiiiii, Hi Ash, thanks a lot for your reply and explaination. Now i understand better, but could you explain more on AWGN?...

  48. #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...