Recent content by naspek

Homework Statement hey there.. I really hope u guys can help me extracting the important element from the question below; A signal is sampled at the sampling rate of 10kHz. The signal has useful signal content between 1kHz and 2.4kHz, and distortion of not more than 1dB is required for...

Homework Statement Design a constellation diagram that supports transmission of complex symbols where for the same baud rate, the transmission bit rate of symbols on your constellation should be 5 times the transmission bit rate of Binary Phase Shift Keying (BPSK) symbols. The Attempt...

Find the output to each of the inputs given below. For which cases is the transmission distortionless? For the other cases, indicate what type of distorsion in imposed. (a) cos(48πt) + 5 cos(126πt) (b) cos(126πt) + 0.5 cos(170πt) (c) cos(126πt) + 3 cos(144πt) (d) cos(10πt) + 4cos(50πt)...

then... what should i do..? i got stuck there...

how to solve sqrt(-8.3)sqrt(1 - i8)? i try to solve it.. but got the wrong answer.. sqrt(-8.3)sqrt(1 - i8) = sqrt[(8.3i^2)(1 - 8i)] = sqrt (8.3i^2 - 66.4i) = 2.88i + 8.15 the answer should be.. 5.41 + i6.13

Homework Statement i just need steps to draw Smith Chart.. got no idea to start it.. if u've got any references, do post it here..

Find the surface area of that portion of the sphere x^2 + y^2 + z^2 = a^2 that is above xy-plane and within the cylinder x^2 + y^2 = b^2 , 0 < b < a Solution.. i try to find fx and fy.. http://imageshack.us/f/594/33049204.jpg/" how am i going to proceed?

has a transfer characteristic |H(f) given in the link below. The transmission is at maximum error-free rate of 4,800 bps. Compute the SNR (signal-to-noise-ratio) at the channel output. Does the output signal suffer from any distortion? http://imageshack.us/photo/my-images/263/79465468.jpg/...

hey there.. i just don't know how to start answering this question.. please help me get through this question.. thanks.. A channel has amplitude response and phase shift shown in the link below. State what type of distortion is imposed for each of the inputs given below: i) (cos 20 pi t) +...

consider this following triple integral 1/(x^2+y^2+z^2)dxdydz bounded above by sphere z=(9-x^2-y^2)^1/2 and below by the cone z=(x^2+y^2)^1/2 what i have done: z=Pcospi P^2=x^2+y^2+z^2 9=x^2+y^2+z^2 P=0 to 3 pi=0 to pi/4 theta=0 to 2pi is this the correct range?

find the volume of the solid D that lies above the cone z = (x^2 + y^2)^1/2 and below the sphere z = (x^2 + y^2 + z^2) i've done the integration until i need to substitute cos phi = u.. however.. i don't know to change the range.. http://imageshack.us/photo/my-images/839/spherical.jpg/"

got it! thank u very much! =)

Find the volume of the solid that lies under the paraboloid z = x^2 + y^2, above xy plane, and inside the cylinder x^2 + y^2 = 2y First, i try to find the range.. i transfer it to cylindrical coordinates.. sqrt(y^2)=<z<=r^2 i don't know how to find r i know that phi is from 0 to 2pi...

yup2.. it's integration error.. duuhh...~ thanks btw.. problem solved..

Write a triple integral to represent the volume of the solid The wedge in the first octant and from the cylinder y^2 + z^2 <= 1 by the planes y=x, x=0, z=0 First.. i find the range for z..; 0 <=z<= sqrt(1- y^2) then... i find the range for y..; let z =0 0<=y<=1 next, if i...