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Recent content by Roshdy

  1. Roshdy

    Can I have a direct relation between z & x in this matrix?

    Dear all if I have R = z * zH, z is column vector, zH is the hermition of z R = Σ (xi * xiH) , i is from 1 to N, xi is column vector, xiH is the hermition of xi can I have direct relation between z & x regards
  2. Roshdy

    please help me to solve this integration

    ∫1/ ( (x²+a²) √(x²+b²) ) dx (x²+a²) myliplied by the root of (x²+b²) in the denominator a & b are two different constants.
  3. Roshdy

    need help in integration - two excamples

    need help in integration what is the right substitution to make these integrals ∫ (√x)/(x^¾+1)dx ∫x² √(4-x²)dx
  4. Roshdy

    calculation of three integrals

    integrations how those integrals can be performed ∫ x (inv cosh x) dx ∫ (x^8 ) ln (x^5) dx ∫ (1/x) (x^2 -25)^1.5 dx
  5. Roshdy

    integration of hyperbolic functions

    does anyone know the integration of the inverse hyperbolic functions???
  6. Roshdy

    multiple access interference

    Dear all I need a closed form for the multiple access interference in CDMA systems and its derivation. If anyone can post or give me a location I can find, the help is highly appreciated. thanks in advance. Roshdy
  7. Roshdy

    Reference to start with about parasitic extraction

    Re: parasitic extraction Resistance, Capacitance and Inductance Added after 14 minutes: where can I find STAR-RC user manual
  8. Roshdy

    Reference to start with about parasitic extraction

    dear all please suggest a reference to start reading in "parasitic extraction"
  9. Roshdy

    I need matlab simulation (SNR vs BER)

    need matlab simulation Dear all I need a matlab file (m file) simulates the SNR versus the BER for the convolutional coder and Viterbi decoder with QPSK input if anybody can help please upload. Roshdy
  10. Roshdy

    Help me solve this integration

    ∫ sin²(x)/x² The integration is required from 0 to ∞ Dear all if anyone can help solving this integration please reply regards Roshdy
  11. Roshdy

    What algorithms can be used for channel estimation?

    Re: Alamouti algorithm dears vkekk and m_llaa please post another topic for your discussion Roshdy
  12. Roshdy

    What algorithms can be used for channel estimation?

    Re: Alamouti algorithm Dear mimomod please give me more details (block diagrams or equations) I model the channel as a exp(j Θ ) I want to estimate a and Θ , at leat a Roshdy
  13. Roshdy

    What algorithms can be used for channel estimation?

    Dear all Alamouti algorithm (Oct 1998) needs channel estimation. If any one knows what algorithms can be used for channel estimation please tell me, at least the names of the algorithms. regards Roshdy
  14. Roshdy

    orthogonal transformation

    if u have copy please upload
  15. Roshdy

    orthogonal transformation

    Dear all How does the orthogonal transformation affect the outer product of the vector transformed. thanks in advance
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