The number of Walsh codes determines the maximum number of MSs that can be serviced simultaneously. Why not use a large Walsh code? What are the limitations or disadvantages? Explain clearly (Range of Walsh code is between 28-128 bits).
What will be an ideal response?
Walsh codes are used in the order of power of 2. A large number may not be used
as it will be difficult to maintain the orthogonality among the wave forms and
make sure that they are all aligned in time. Also, the power level of the Walsh
codes needs to be at the required level to measure the code domain power (ratio of
power in each of the forward link Walsh codes to the total CDMA channel power
transmitted) to more accurately monitor the performance.
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What will be an ideal response?
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