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Questions and Answers
In a CDMA system, what property do the codes Ci' and Cj' satisfy?
In a CDMA system, what property do the codes Ci' and Cj' satisfy?
- Power control
- Frequency hopping
- Orthogonality (correct)
- Spread spectrum
Which process involves spreading a data signal by a code signal to result in a message signal?
Which process involves spreading a data signal by a code signal to result in a message signal?
- Power control
- Frequency hopping
- Direct Sequence Spread Spectrum (correct)
- Walsh Codes
What is the purpose of Direct Sequence Spread Spectrum (DSSS)?
What is the purpose of Direct Sequence Spread Spectrum (DSSS)?
- Data encryption
- Frequency modulation
- Signal spreading (correct)
- Power distribution
Which term refers to the codes that are used as Orthogonal Codes in wireless systems?
Which term refers to the codes that are used as Orthogonal Codes in wireless systems?
What is the primary function of Walsh Codes?
What is the primary function of Walsh Codes?
Which technique involves changing frequencies many times per second to avoid interference?
Which technique involves changing frequencies many times per second to avoid interference?
'Spreading of data signal by the code signal' is a key concept in which spread spectrum technique?
'Spreading of data signal by the code signal' is a key concept in which spread spectrum technique?
'Power frequency' is associated with which spread spectrum concept?
'Power frequency' is associated with which spread spectrum concept?
'Signal m(t)' and 'Code c(t)' are involved in which spread spectrum technique?
'Signal m(t)' and 'Code c(t)' are involved in which spread spectrum technique?
'Wal (0, t)', 'Wal (1, t)', 'Wal (2, t)' are examples of what type of codes?
'Wal (0, t)', 'Wal (1, t)', 'Wal (2, t)' are examples of what type of codes?
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