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Title: Wireless Communications

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Subject: Technology
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Date: February 1, 2006
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Length: 16 / 4759
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By May 2001 there were 35 million subscribers on CDMA systems worldwide, now there are over 270 million. CDMA uses unique spreading codes to spread the baseband data before transmission. It works by transmitting a digitally encoded analog signal using spread-spectrum technology combined with a special coding scheme over a 1...

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It works by transmitting a digitally encoded analog signal using spread-spectrum technology combined with a special coding scheme over a 1.25 MHz channel. It encodes the data using a set of 64 bit Walsh Codes. In theory at least, up to 64 users could use the same channel...

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