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US 2008/0175337 A1Published application
Packet frame synchronization for mimo system with cyclic shift spatial streams
AssigneeCrystalmedia Technology, Inc.
InventorPo-Yuen Cheng
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Abstract
A frame synchronization method is disclosed. The method comprises correlating a stream with a pattern to generate a correlated result c(t). A first peak and a second peak are selected from the correlated result c(t), wherein the first peak is the peak with highest amplitude, and the second peak is the peak occurring later than the first peak with the second highest amplitude. The peak ratio of the two peaks is computed, and the position of the frame boundary is determined according to the ratio.
Claims13
A frame synchronization method, comprising:
- correlating a stream with a pattern to generate a correlated result c(t);
- selecting a first peak and a second peak from the correlated result c(t), wherein the first peak is the peak with highest amplitude, and the second peak is the peak occurring later than the first peak, with the second highest amplitude;
- comparing a ratio of the second peak over the first peak;
- and
- determining the position of a frame boundary of the stream according to the ratio.
2 more elements
A receiver for detecting frame boundary, comprising:
- a correlator receiving a stream and correlates the stream with a packet pattern to generate a correlated result c(t);
- a peak selector selecting a first peak and a second peak from the c(t), wherein the first peak is the peak with the highest amplitude, and the second peak is the peak occurring after the first peak, with the second highest amplitude, and
- a interpolator interpolating a first position of the first peak and a second position of the second peak to generate a frame boundary of the stream.
Dependencies are inferred from the claim text.