Description: DS-CDMA to achieve the basic process: <TRANSMITTING END> Information to be passed- NRZ transformation (into NRZ code)--- modulated (multiplied by sqrt (2* eb)* cos (2* w* t ))---- spread spectrum (multiplied by the m-sequence or other pseudo- random code)---- channel transmission (with additive noise) <DURING THE CHANNEL>--- Despreading (multiplied by the same pseudo-random m-sequences or other code)--- demodulation (multiplied by sqrt (2* eb)* cos (2* w* t ))---- bit identification (sum (i)> 0-> 1 sum (i) < 0---> 0)
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ds_cdma.m
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