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Recent content by sureshreddy

  1. S

    a Question about SC-FDMA and OFDMA

    Hi, In LTE OFDMA is used in Downlink.OFDMA having High PAPR.signals with high PAPR requires highly linear power amplifiers inorder to avoid excessive intermodulation distortion so,amplifiers must be operate with a large backoff from its peak value.High PAPR is particularly critical for uplink...
  2. S

    basics of wireless optical communication

    Hi, Both are different.
  3. S

    how to learn c programming

    Hi, Try to read this book "c programming by yashwant kanetkar".once u complete reading this book then try to read "C programming by Dennis Ritchie".These two books almost covers all topics.
  4. S

    What does FDMA stand for?

    Hi, FDMA is one among multiple access techniquies.dma(dynamic mem. access) is not at all related to this but,during code writing time allocation of memory normally use static memory allocation or dynamic memory allocation.donot compare FDMA with DMA.
  5. S

    Visualizing SCFDMA & OFDMA signal

    n LTE OFDMA is used in Downlink.OFDMA having High PAPR.signals with high PAPR requires highly linear power amplifiers inorder to avoid excessive intermodulation distortion so,amplifiers must be operate with a large backoff from its peak value.High PAPR is particularly critical for uplink...
  6. S

    What does TFT stand for and what it is ?

    Hi, This question related to TFT of LTE or TFT related to electronics.
  7. S

    single carrier FDMA ( SC- FDMA)

    In LTE OFDMA is used in Downlink.OFDMA having High PAPR.signals with high PAPR requires highly linear power amplifiers inorder to avoid excessive intermodulation distortion so,amplifiers must be operate with a large backoff from its peak value.High PAPR is particularly critical for uplink...
  8. S

    measure the distance between two objects in a pic using MATLAB

    Hi, There are many ways to find distance between two objects in pic.formulae is Dist= pt1-pt2; Distance=Sqrt(Dist*Dist');
  9. S

    MIMO OFDM architecture

    MIMO is mainly to send more data at the same time over multiple tanmitters and receivers. OFDM is mainly for multipath problem by splitting carriers into smaller subcarriers, and then broadcasting those simultaneously. This reduces multipath distortion and reduces RF interference allowing for...
  10. S

    AnyAT command that automatic time zone update in WAVECOM ?

    AnyAT command that gives automatic time zone update and reporting in WAVECOM Q2686 modem and teltonika modem?
  11. S

    need help in sobel edge detection

    Sobel is one among best filters to find out edges in image.By using this filter do it once in X-axis with main image and do it once inY-axis with main image.
  12. S

    Where can I purchase Low Cost GSM Modules

    hai, yo can get teltonica modems at a cheap price.
  13. S

    Cellular AT Commands for Siemens

    Re: Cellular AT Commands Hai, AT command sets are standard but few commands are proprietary
  14. S

    Requested AT commands

    hai, apart from this at+csq some proprietary commands may be available?
  15. S

    Image Processing with C language

    Re: Image Processing hai, Depends upon the application in the image processing algorithm will vary.what exactly the application you are working?
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