Google Awarded Patent to Speed Up CDMA |
| Wednesday, 04 January 2006 | |
 Google was awarded a new patent in the wireless arena. Google has developed a technology to make data accessible at faster speeds on CDMA systems. Could licensing this technology to various wireless providers be a new revenue stream for Google? How much will this speed up EVDO? Title: Baseband direct sequence spread spectrum transceiver Application Filed: January 26, 2001 Application Awarded: January 3, 2006 Abstract: A baseband direct sequence spread spectrum CDMA transceiver. The data signal is modulated with a Hadamard function having pseudorandomly scrambled rows. This data signal is then broadcast baseband, absent a carrier, by a relatively short, mismatched antenna. The baseband signal is spread out across the DC to 30 MHz spectrum. A low noise, high gainbandwidth product amplifier boosts the baseband RF signal. A correlator/servo system is used to actively cancel the transmit signal from the received signal. Consequently, the same antenna can be used to receive incoming baseband RF signals as well as transmit baseband RF signals, thereby providing full duplex operation. From the Background of Invention: The advantages of CDMA carry over into high-speed wireless digital access. Increasingly, wireless digital applications are being used to access digital data (e.g., the Internet, intranet, multimedia, business data, etc.) at high speeds. With high speed wireless access, mobile users can obtain instant access to the Internet, business data (e.g., stock market quotes, sales reports, inventory information, price checks, customer data, emails, pages, etc.), and other real time data (e.g., traffic updates, weather information, sports news, etc.). The goal is to provide cellular handsets, personal digital assistants, portable communications devices, etc. the ability to transmit and receive digital data as well as make conventional telephone calls. The trend is towards ever faster mobile data speeds to meet customer demands. With greater data speeds, it is possible to provide even more data to more users. Recent CDMA based standards such as IS-95 and 3G are proposing increased data rates and capabilities. Related Articles: |
|
| Last Updated ( Tuesday, 26 September 2006 ) |
| < Prev | Next > |
|---|
Mac EVDO
