ALEXANDRIA, Va.-The U.S. Patent and Trademark Office awarded a patent to Google Inc. for a technology that makes more data exchanges possible at faster speeds on a CDMA-based wireless network.
Google did not return requests for comment on the patent, which was awarded to the company Jan. 3. The patent application defines the technology as a “baseband direct sequence spread spectrum transceiver.”
According to the patent’s abstract: “The data signal is modulated with a Hadamard function having pseudo-randomly 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-gain bandwidth 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.”
The patent application was filed Jan. 26, 2001.
A darling of Wall Street, Google made its mark with its wildly successful advertising-based, search-engine business. The company since has expanded into other areas, including wireless. However, the company’s newest patent comes as somewhat of a surprise since Google has stayed away from wireless transmission standards and wireless technology development.
