Walsh Codes

Spreading and Scrambling Codes in CDMA: Walsh, PN, Gold, and OVSF

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Code Division Multiple Access (CDMA) systems multiplex users over identical time and frequency slots. Separation occurs entirely in the code domain. Fifty people talk at once in one room. Each pair speaks a different language, so you still follow your friend. That is CDMA. All users share the same frequency and the same time, and … Read more