The block diagram of the QAM simulation model is as shown below,
Code for MATLAB clear;
clc; N = 10^4; % number of symbols M = 16; % constellation size k = log2(M); % bits per symbol % defining the real and imaginary PAM constellation
For QAM, each carrier is ASK modulated. The two independent signals are simultaneously transmitted and at the receiver, the two signals are demodulated, and the results combined to produce the original binary input.…
In other words, the sequences transmitted from two different antenna elements are orthogonal to each other for each transmission block. For real signal, it is possible to reach full rate. However, it has been proven in [4] that this statement is false for two-dimensional constellations, complex signals. The encoding and decoding approaches follow the pattern described in Alamouti’s method. For complex signals, the theory of orthogonal designs can be used to generate coding matrices that achieve a transmission rate of 1/2 for the cases of 3 and 4 transmission…
inter character gap serves as a break between the characters of a discrete encoded bar code… The width of the gaps should not be more than 4x dimensions…
+ 0 + 0 0 0 + 0+ 1 1 0 0 8 + 4 + 0 + 0= 140 Address Classes • There are 5 different…
3) Between -7999 and +7999. This is because 16 bits provide four four-bit locations. The lowest (right most) and two middle 4 bits can each store any number from 0 to 9. In the highest (left most) 4 bits, one bit is used for the sign, leaving 3 bits for digits. These 3 bits can accommodate numbers between 0 and 7.…
13) For each of the following 6-bit operations, calculate the values of the C, Z, V, and N flags in the ARM.…
As you can see, these abbreviations stand for a specific number of bytes. And each byte holds 8 bits capable of forming 256 combinations of 1/0. Wow!…
IN BCD EACH NUMBER IS DEFINED BY A BINARY CODE OF 4 BITS. *** 8 – 4 – 2 – 1 MOST COMMON CODE 8 – 4 – 2 – 1 CODE INDICATES THE WEIGHT OF EACH BIT 23 – 22 – 21 – 20 E.G. 934 = 1001 0011 0100 9 3 4 FOR EACH DIGIT A BINARY [NORMAL] CODE IS ALLOCATED. OHER REPRESENTATION FORMS ARE 2-4-2-1 AND EXCESS-3…
The intensity of the electron beam and the brightness of the dot are determine by the…
We as a group of telecommunication engineer in the established telecommunication company have been invited to participate in one seminar called “Principle Communication and Communication System”. In the seminar, our group has been responsibilities on a project to design a balanced ring modulator circuit which is need to comes up with proposal and present it in a technical report.…
Dr. P. Sudhakara Rao, Dean UNIT1: NUMBER SYSTEMS & CODES • Philosophy of number systems • Complement representation of negative numbers • Binary arithmetic • Binary codes • Error detecting & error correcting codes • Hamming codes Switching Theory and Logic Design…
16. Draw the graph of Polar RZ scheme for the bit streams, (a) 01001, and (b) 00110011001…
Example: 16C84 was the first of its kind. It was later reissued as the 16F84,…
Consider stellar (star) shapes with p vertices, leading to p-stellar numbers. The firsr four representations for a star with six vertices are shown in the four stages S1-S4 below. The 6-stellar number at each stage is the total number of dots in the diagram.…
STEP 2 Use the table above to covert each quartet to its Hex equivalent - 8937…