Review: Code division multiple access (CDMA) belongs to the family of channel partitioning protocols. Itis prevalent in wireless LAN and cellular technologies. In CDMA, one channel carries all transmissionssimultaneously. Multiple simultaneous transmission is separated using code theory.13Question:d₁.c₁d3 C3d3A. +1 +1 +3-1B. -1-1-3 +1d₁ C₁ + d₂. C₂ + d3 C3 +d4.c4DataC. [-1-1+3+1]D. Error!Simple idea of communication with code2d₂4d₂.c₂CommonchannelChip sequences for each node given as:user1 => c1 = [+1 +1 +1 +1]user 2 => c2 =[+1 -1 +1 -1]user 3 => c3 = [+1 +1 -1-1]user 4 => c4 = [+1 -1 -1 +1]Data bit for each user given as => user1: d1 = 0, user2: d2 = 0, user3: d3 = silent, user4 d4 = 1Assumption: Data representation in CDMA: Data bit 0 -> -1, Data bit 1 -> +1, Silence (No data) -> 0Which of the answer below shows common channel data (that contains all four signals)?d4-C4d4

Given:user 1=> c1 = [+1 +1 +1 +1]user 2=> c2 = [1 - 1 + 1 - 1]user 3=> c3 = [1 + 1 - 1 -…

Answered: Which of the answer below shows common…

Which of the answer below shows common channel data (that contains all four signals)? A. +1 +1 +3-1 B. -1-1-3 +1 C. [-1-1+3+1] D. Error!

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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Concept explainers

Latches and Flip Flop

Just like logic gates, the latches and flip-flops are the important elements of an electronic circuit. The logic gates form the important part of combinatorial circuits, while the latches and flip-flops form the essential part of a sequential circuit. Sequential circuits form the important concept of automata theory in electronics and electrical engineering, these circuits are a kind of logic circuit whose output depends on both present input and past inputs, that is, the input history.

Question

Review: Code division multiple access (CDMA) belongs to the family of channel partitioning protocols. It
is prevalent in wireless LAN and cellular technologies. In CDMA, one channel carries all transmissions
simultaneously. Multiple simultaneous transmission is separated using code theory.
1
3
Question:
d₁.c₁
d3 C3
d3
A. +1 +1 +3-1
B. -1-1-3 +1
d₁ C₁ + d₂. C₂ + d3 C3 +d4.c4
Data
C. [-1-1+3+1]
D. Error!
Simple idea of communication with code
2
d₂
4
d₂.c₂
Common
channel
Chip sequences for each node given as:
user1 => c1 = [+1 +1 +1 +1]
user 2 => c2 =[+1 -1 +1 -1]
user 3 => c3 = [+1 +1 -1-1]
user 4 => c4 = [+1 -1 -1 +1]
Data bit for each user given as => user1: d1 = 0, user2: d2 = 0, user3: d3 = silent, user4 d4 = 1
Assumption: Data representation in CDMA: Data bit 0 -> -1, Data bit 1 -> +1, Silence (No data) -> 0
Which of the answer below shows common channel data (that contains all four signals)?
d4-C4
d4

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