06169733 is referenced by 106 patents and cites 6 patents.

A mobile handset is able to receive and transmit to base stations operating in compliance with different standards, for example CDMA, TDMA or AMPS. The mobile handset converts the received signal down to baseband and digitizes only a single channel at a time rather than the whole band. The channel chosen is the biggest of the various transmission systems used. For example, the channel widths for CDMA, TDMA and AMPS are, respectively 1.25 MHz, 30 KHz and 30 KHz. Accordingly to deal with these three systems a 1.25 MHz channel is digitized. Thereafter a digital signal processor determines which of the three systems is being used and appropriate processing and demodulation is carried out.

Title
Multiple mode capable radio receiver device
Application Number
8/855846
Publication Number
6169733 (A)
Application Date
May 12, 1997
Publication Date
January 2, 2001
Inventor
Michael C G Lee
Ottawa
US
Assignee
Northern Telecom
US
IPC
H04B 7/216
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