1. Five channels, each with a 100-kHz bandwidth, are to be multiplexed together. What is the minimum bandwidth of the link if there is a need for a guard band of 10kHz between the channels to prevent interference? Draw the frequency assignment allocation.
1. Five channels, each with a 100-kHz bandwidth, are to be multiplexed together. What is the minimum bandwidth of the link if there is a need for a guard band of 10kHz between the channels to prevent interference? Draw the frequency assignment allocation.
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![1. Five channels, each with a 100-kHz bandwidth, are to be multiplexed together. What is
the minimum bandwidth of the link if there is a need for a guard band of 10kHz between
the channels to prevent interference? Draw the frequency assignment allocation.
2. The Advanced Mobile Phone System (AMPS) uses two bands. The first band of 824 to
849 MHz is used for sending, and 869 to 894 MHz is used for receiving. Each user has a
bandwidth of 30 kHz in each direction. The 3-kHz voice is modulated using FM, creating
30 kHz of modulated signal. How many people can use their cellular phones
simultaneously?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F19c46a50-79b1-4deb-861a-0460e53681cb%2F2c1892d7-68c4-42fa-a6a6-35f16ea4327a%2Folmtbi6_processed.jpeg&w=3840&q=75)
Transcribed Image Text:1. Five channels, each with a 100-kHz bandwidth, are to be multiplexed together. What is
the minimum bandwidth of the link if there is a need for a guard band of 10kHz between
the channels to prevent interference? Draw the frequency assignment allocation.
2. The Advanced Mobile Phone System (AMPS) uses two bands. The first band of 824 to
849 MHz is used for sending, and 869 to 894 MHz is used for receiving. Each user has a
bandwidth of 30 kHz in each direction. The 3-kHz voice is modulated using FM, creating
30 kHz of modulated signal. How many people can use their cellular phones
simultaneously?
![3. In the given figure below, the data rate for each input connection is 3 kbps. If 1 bit at a
time is multiplexed (a unit is 1 bit), what is the duration of (a) each input slot, (b) each
output slot, and (c) each frame?
A3
A2
Al
C3 B3:A3 C2H82:A2 C1:BI!AI
B2
BI
Frame 3
Frame 2
Frame
MUX
Each frame is 3 time slots.
Each time slot duration is T13 s
Data are taken from cach
line every Ts.
4. Four 1-kbps connections are multiplexed together. A unit is 1 bit. Find (a) the duration of
1 bit before multiplexing, (b) the transmission rate of the link, (c) the duration of a time slot,
and (d) the duration of a frame.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F19c46a50-79b1-4deb-861a-0460e53681cb%2F2c1892d7-68c4-42fa-a6a6-35f16ea4327a%2Fp25sy9v_processed.jpeg&w=3840&q=75)
Transcribed Image Text:3. In the given figure below, the data rate for each input connection is 3 kbps. If 1 bit at a
time is multiplexed (a unit is 1 bit), what is the duration of (a) each input slot, (b) each
output slot, and (c) each frame?
A3
A2
Al
C3 B3:A3 C2H82:A2 C1:BI!AI
B2
BI
Frame 3
Frame 2
Frame
MUX
Each frame is 3 time slots.
Each time slot duration is T13 s
Data are taken from cach
line every Ts.
4. Four 1-kbps connections are multiplexed together. A unit is 1 bit. Find (a) the duration of
1 bit before multiplexing, (b) the transmission rate of the link, (c) the duration of a time slot,
and (d) the duration of a frame.
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