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Orthogonal Space

21 Threads found on edaboard.com: Orthogonal Space

Can surface current distribution tell which type of polarization we have ?

Hi, In order to obtain circular polarization you must have two modes spacially orthogonal and with a 90° phase shift. These two modes are usually distributed in the same manner in the space (for the electric or the magnetic field). The magnetic field can give us the surface current ( Js = H^n) and consequently you have the two distributions of curr

Drawing lines in Altium schem symbol library

Hello, I am trying to draw a small arrow in Altium, and obviously want the line to be able to go in any direction, not just orthogonal , any ideas??this is absolutely simple to achieve in Eagle?no idea in Altium

SC-FDE and OFDM STBC

Hello all, Why when we use space-time block coding (STBC) with single-carrier frequency-domain equalization (SC-FDE) we use a permutation matrix, while we don't use it in case of orthogonal frequency division multiplexing (OFDM)? Thanks

KVL for Rms voltages

AC quantities are vectors in a two-dimensional vector space, usually respresented by complex numbers. In the present case both voltages are orthogonal, summing like the legs of a right-angled triangle.

orthogonal space time block coding

please i need code shows graph the result of simulation of no diversity(1Tx,1Rx)(BPSK),OSTBC(4Tx,1Rx)(QPSK),Alamouti(2Tx,2Rx)(BPSK), Maximal-Ratiocombining(1Tx,4Rx)(BPSK) and Theoretical 4th ?orderDiversity(QPSK). please help me i need code to my project

Help with OFDM:trouble with orthogonality

don't get confused by the word "orthogonal". Here's what happens in simpler (?) words ... and based on understanding of the Sinc function. if you space the subcarriers from one another by any amount equal to the reciprocal of the symbol period of the data signals, the resulting sinc (sin x/x) frequency response curve of the signals is such that

find orthogonal vectors

Two vectors are orthogonal one each other if their dot product is zero, then I think you just have to find a vector (y1, y2, y3) so that: x1*y1+x2*y2+x3*y3=0 As said by Shug, in the space there are infinite vector orthogonal to a given one. If you don't have other costraints I think you can arbitrary assign a value to two variables (...)

Principal Component Analysis A newbie question -originally posted in un related forum

Hi guys, I'm trying to learn PCA. as an example I have just 2 points in my 3-D space. using PCA(eigen vectors) the outcomes are the principal component: line connecting these 2 points the 2 other orthogonal axes in my opinion could be anywhere in the plane perpendicular to this connecting i wonder what is the PCA criteria to give me t

Principal Component Analysis A newbie question

Hi guys, I'm trying to learn PCA. as an example I have just 2 points in my 3-D space. using PCA(eigen vectors) the outcomes are the principal component: line connecting these 2 points the 2 other orthogonal axes in my opinion could be anywhere in the plane perpendicular to this connecting i wonder what is the PCA criteria to give me the

What is wrong with this STBC segment?

Hi, I am trying to do simulation for orthogonal space-Time Block Coding (OSTBC) with four transmit and one receive antenna using BPSK modulation. I followed the approach in Jafarkhani's book: "space-Time Coding: Theory and Practice", but the curve is not consistent with his. Why? clear all; clc; SNRdB=0:30; SNR=10.^(SNRdB./10);

Need Matlab code for Orthogonal Space time block codes

Hi Everyone. I am doing thesis on this topic .Please help me by providing matlab code for " Performace analysis of orthogonal STBC using feedback in correlated channels ". if anyone is having or provide some related material I will be very much thankful to the person.Please mail me at

Interference of Circular Polarization in DBS satellites

Hi everyone. I know that vertical and horizantal polarizations are orthogonal in space. what I dont understand is how can RHCP and LHCP be orthogonal in space. If two waves RHCP and LHCP are existing in the same position, then I assume that their vector components will interfere and may cause for example linear (...)

Does TDMA has more channel capcity than FDMA.

In book of Andrea Goldsmith, it is written that "TDMA, FDMA, and orthogonal CDMA are all equivalent in the sense that they orthogonally divide up the signaling dimensions, and they therefore create the same number of orthogonal particular, given a signal space of dimension 2BT, N orthogonal channels of (...)

Active Front End Converter?

I understand how to use clarke/park transformers, but personally I have only used them to control induction machines via pwm inverters. In my opinion, the operation is similar in many aspects. AFE control can also use two phase orthogonal (Iα, Iβ, Vα, Vβ) space vector descriptions. As a specific point, a mains f

Space time Coding by Vucetic and Yuan

>1.I would want to know a little bit about Non-orthogonal STBC. Can you help me! Guess these are codes where the transmitted sequences are not always orthogonal to each other, unlike, say, Alamouti. But then, may be they are called "partially orthogonal" >2.Are STBCs a kind of chanel coding or what? Nope. STBC are not for error (...)

How to plot three orthogonal circles with angle in space?

3 orthogonal circle as 3 coordinate axis!

information on space time block codes from orthogonal design

i am doing project work on "space time block codes from orthogonal designs" using matlab. can anybody send materials regarding this topic which help me to understand theory more. i thank u lot to those.....

When two or more frequencies are orthogonal to each other?

Where are two or more frequencies orthogonal to each other? M

Orthogonal polynomials

I need an elementary Introduction to ?orthogonal Polynomials? can I have a suggestion ?? Thank you

Understanding plane wave propagation

Hallo, well, the plane wave is known as the easiest solution of the maxwell equations for the dielectric space. Any wave propagation is based on the fact, that a time varying electric field produces a time varying magnetic field (through displacement current) and the time varying magnetic fild induces a time varying electric field. I cant f