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A constant amplitude zero autocorrelation waveform (abbreviated CAZAC) is a periodic complex-valued signal with modulus one and out-of-phase periodic (cyclic) autocorrelation equal to zero.
CAZAC (constant amplitude with zero auto correlation)
In wireless cdma technology , the given data encoded and in transmitter side number users assign to unique codes with help comman codes ( ex.. PN sequences , psuedo random noice) . In cdma technology data transmitted under same range of frequency but the users are identified by the unique nomber , the codes are matched between the particular users than data will transmitted .
The matching between the users is called synchoronous cdma. The coded data sending with constant amplitude and zero auto correlation . The constant amplitude means the sending and receiving easily without any correption. Zero auto correlation means the correlative variance between the users is zero ,so no interaction between the users.
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