CDMA is a technique used for wireless data transmission. Every mobile handset and every wireless base station operate on the same frequency spectrum. In order to discriminate one conversation from another, every handset broadcasts a unique code sequence. CDMA base stations must be able to discriminate these different code sequences in order to distinguish one transmission from another. This discrimination is accomplished by means of a matched filter, whose output indicates when a particular code sequence is detected in the input data stream. This paper includes a reference design (HDL code) for implementing parallel matched filters.
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