| 摘要 |
Disclosed are methods and apparatus for initial acquisition in a communication system, and in particular Time Division Duplex (TDD) systems such as those found in LTE. A disclosed method, for example, includes running a plurality of predetermined amplifier gain states for a low noise amplifier (LNA) during initial acquisition in a time division duplex (TDD) system, and determining acquisition of a received signal based on searching across the plurality of predetermined amplifier gain states. Forcing the amplifier gain into a set of predetermined gain states affords quicker resolution of initial acquisition for setting the gain of the LNA, which in TDD systems is complicated due to an uncertain uplink/downlink timeline that precludes continuous operation of a gain setting algorithm run in the LNA.
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