Sources: Business Week, SlashGear
quote: LightSquared has come out with its most concrete claims so far that its LTE network will not interfere with GPS services across the US. The start-up says an Alcatel-Lucent laboratory has carried out extensive tests on devices from three GPS vendors, whose preliminary results demonstrate that those devices are not disrupted by the LTE signals in nearby mobile satellite spectrum.
quote: LightSquared has proposed various remedies to the GPS issue, including restricting its services to the area of its spectrum which is furthest from the navigation service bands.
quote: These tests are meaningless unless they were conducted with GPS receivers that meet their (well known but ignored) filtering requirements.
quote: What you're missing is that if the GPS folks had played by the rules and used proper filtering in the first place, this wouldn't be an issue. But when GPS began there was no LightSquared, so they cheaped out on the filters since there was nothing there to filter.
quote: The units which fared well in the test are probably bigger units with better antennas and more power for electronic filtering and signal processing. If LightSquared's project goes live, you can probably kiss the GPS in your phone goodbye.