Select the correct statement(s) regarding direct sequence spread spectrum (DSSS) and orthogonal frequency division multiplexing (OFDM).
a. OFDM is not classified as a spread spectrum technique, although OFDM has the effect of spreading the signal over a larger frequency spectrum
b. OFDM has greater spectral efficiency compared to DSSS
c. DSSS relies upon a PN code that is only shared by the transmitter and receiver pair
d. all statements are correct

Answers

Answer 1

Answer:

a. OFDM is not classified as a spread spectrum technique, although OFDM has the effect of spreading the signal over a larger frequency spectrum.

Explanation:

Orthogonal Frequency Division Multiplexing is a technique in which large digital data is sent over radio waves by splitting it into multiple subcarriers. The data is then transmitted to different users who can access the files. OFDM is not a spread spectrum technique, it is based on large frequency spectrum.


Related Questions

Write a function charInWord that takes in two parameters, a char (character) and a word (string). The program will return true if the character is in the word and false if it is not. If word is not a string type, or if char is not a string type, or if the length of char is greater than 1, the function should return None. Your main program should call the function and print char is in word if the function returns true, or char is not in word if the function returns false, using the user-supplied values instead of char and word. The program should print incorrect input provided if the function returns None. Ex: If the input is: a cat the output is: a is in cat Ex: If the input is: a club the output is: a is not in club Ex: If the input is: ab horse the output is:

Answers

Answer:

The program in Python, is as follows:

def charInWord(chr,word):

   if len(chr)>1:

       print("None")

   elif not(chr.isalpha() and word.isalpha()):

       print("None")

   else:

       if word.find(chr) == -1:

           print(chr+" is not in "+word)

       else:

           print(chr+" is in "+word)

chr = input("Character: ")

word = input("Word: ")

print(charInWord(chr,word))

Explanation:

This defines the function

def charInWord(chr,word):

This checks if the length of character is greater than 1

   if len(chr)>1:

If yes, it prints None

       print("None")

This checks if the character or the word contains invalid character

   elif not(chr.isalpha() and word.isalpha()):

If yes, it prints None

       print("None")

This is executed for valid parameters

   else:

If the character is not present, this is executed

       if word.find(chr) == -1:

           print(chr+" is not in "+word)

If the character is present, this is executed

       else:

           print(chr+" is in "+word)

The main begins here

This gets the character

chr = input("Character: ")

This gets the word

word = input("Word: ")

This calls the method and prints the required output

print(charInWord(chr,word))

Jobs with only 7 letters

Answers

Answer:

nursing

Explanation:

it's needs 20 words so don't mind thisssss part hehe

Answer: Teacher!!!!!!

Which of the following characterizes how an enabled security program might react to a new program installation on a computer system?


It might alert you to space requirement excesses.

It might report an error or tell you that the file is corrupted.

It might protect the new installation from getting viruses.

It might automatically set a restore point for the computer system.

Answers

Answer:

It might automatically set a restore point for the computer system

Answer:

It might report an error or tell you that the file is corrupted.

Explanation:

PLEASE SOMEONE ANSWER THIS
If the old code to a passcode was 1147, and someone changed it, what would the new code be?

(I already tried 4117)



[I forgot my screen time passcode please someone help I literally can’t do anything on my phone.]

Answers

Answer:

Any of these?

Explanation:

1147. 4117. 7411

1471. 4171

1714. 4711

1741. 7114

1417. 7141

Answer:

1417

Explanation:

A gui allows you to interact with objects on the screen such as icons and buttons true or false

Answers

Answer:

True

Explanation:

Rupesh wants to try programming with Eclipse. What is the first step he should take to make that happen?


download the Eclipse IDE

download the current Java Development Kit

create a restore point

disable his security program

Answers

Answer:

create a restore point

Explanation:

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