10 Questions
In a CDMA system, what property do the codes Ci' and Cj' satisfy?
Orthogonality
Which process involves spreading a data signal by a code signal to result in a message signal?
Direct Sequence Spread Spectrum
What is the purpose of Direct Sequence Spread Spectrum (DSSS)?
Signal spreading
Which term refers to the codes that are used as Orthogonal Codes in wireless systems?
Walsh codes
What is the primary function of Walsh Codes?
Code spreading
Which technique involves changing frequencies many times per second to avoid interference?
Frequency hopping
'Spreading of data signal by the code signal' is a key concept in which spread spectrum technique?
Direct Sequence Spread Spectrum
'Power frequency' is associated with which spread spectrum concept?
Direct Sequence Spread Spectrum (DSSS)
'Signal m(t)' and 'Code c(t)' are involved in which spread spectrum technique?
'Walsh coding'
'Wal (0, t)', 'Wal (1, t)', 'Wal (2, t)' are examples of what type of codes?
'Orthogonal codes'
Test your knowledge on the importance and benefits of modulation techniques in wireless and mobile systems, including small antenna size, noise and interference reduction, and multiplexing techniques like FDM, TDM, and CDMA.
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