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Recent content by syedshan

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    Tractable mathematical formula for Antenna Gain

    Hi all, In the attached figure, one can find the antenna gain formula. But the authors have simplified it for the main lobe only. Can someone please let me know the exact form of the following simplified formula. G(θ)=1+dcos(nθ), 0≤d≤1, n∈N+ Also, In my opinion this formula gives a general...
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    Does an eNB knows the location of a UE

    Hi all, In cellular communication, does the eNB knows the location of UEs it is serving. If yes, then what procedure does it follows?
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    Adding Successive Interference Cancellation (SIC) to wireless transmission

    I am looking to integrate the Successive-Interference Cancellation (SIC) technique into my system and would like to know if the following would work. Let me first explain the system as Ic is the total interference from neighbouring eNBs. PT and P′T are the transmit powers of the two...
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    K-factor vs Mean of dominant component in Rician fading

    Hi all, The implementation of Rayleigh fading channel 'h' in Matlab is h = randn + 1i*randn; I understand that the implementation for Rayleigh channel h' with mean U for the dominant component is : h' = U + (randn(1) + j*randn(1) )/sqrt(2). But my question is, given K-factor K-dB how can I...
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    Size of a transmission packet

    Hi all I am designing a wireless communication system (based on Aloha like algorithm) for node discovery for vehicular communication with frequencies in the range of 2.4 GHz or 5 GHz (not decided yet). The transmission rate is $\lambda_o$. The transmission time for discovery packet is $ \tau...
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    Exponential distribution in discrete domain

    Hi all, I am trying to make a simulator for asynchronous (wireless) communication. The packet arrival time is exponentially distributed. The method below is working fine if I am using following assumptions that (See Frame_length variable and then the bolded query in the end) % (using...
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    Development of aloha (asynchronous) system for wireless node discovery in Matlab

    Thanks for your reply beeflobill, 1. I am looking to simulate for a single hop network. They network should be asynchronous (later I will extend it to hybrid synch-asynch network) 1.a. The Simulator should be able to detect how many nodes have received the signal from a transmitting device...
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    How to solve nchoosek(k,n), when k <=n?

    Hi all, I was reading a research paper and trying to dig deep. The authors, at one point, have come to a formula as below. Now, if n>k it is piece of cake to solve, but since k<=n it is not that easy for me. Any help would be appreciated in solving this. Especially how I can solve in Matlab...
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    Development of aloha (asynchronous) system for wireless node discovery in Matlab

    Dear all, I am looking to develop a node discovery code in Matlab. I am looking for a code to develop basic aloha system Can someone guide me with the basics of Matlab simulation development of Aloha. I just need help in initiating the basic transmission. Rest I can develop on my own... Would...
  10. S

    Android Java code confusion for beginner

    Dear all Hope everyone is doing great. I am learning Android for the first time. I have done the a code thru tutorial which is working great. Although my code works great. However, I want to inquire about the following code. please see the since I have seen this first time, I cannot...
  11. S

    confusion of Frequency domain in image processing

    Hi all I have a question in understanding the frequency thing in image or pixel. I am confused particularly about the frequency of image or pixel in the quote below. Can anyone let me understand
  12. S

    cannot register window with win32

    Hello every one In my code I need to make two windows. First window is the main window, the second window is not the main window but I will create it sometime later in the code, But now I want to register it at the beginning of the code. Unfortunately I cannot register. I cannot understand of...
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    does stratic III or Stratix II devices support partial reconfiguraion

    Hello every one I need to inquire this question that stratix II or III devices do not support partial reconfiguration? Does anyone has experience of working over Xtremedata XD1000 or XtremeData XD2000i devices which has Stratix II and III respectively as supporting FPGA for a co-processor...
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    HOLD path error for IGNORED TIMIING (TIG) parameter

    Hello ever one, please note first that I am using Xilinx ISE for the following. I cannot understand why do I have hold path violation at the path I have already ignored using TIG parameter. Previously I was having setup path error, hence I put the TIG parameter so that I might have the error...
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    does the following two codes in VHDL mean same. What is difference in implementaion

    hi well the logical operation for both would be same. However implementation at hardware level will be slightly different, but it does not matter much (in my opinion) since at the end of the day the results are what you want
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