Method and apparatus for rate conversion

Details Method and apparatus for rate conversion Method and apparatus for rate conversion

1997-12-23

2000-05-09

Mai, Tan V.

Electrical computers: arithmetic processing and calculating

Electrical digital calculating computer

Particular function performed

341 61, G06F 1717, H03M 700

Patent

active

060617047

ABSTRACT:
A method and apparatus in a radio telecommunications system for converting data from a first sample rate to a second sample rate such that the first and second sample rates are preferably within 10% of each other are disclosed. An input buffer receives a plurality of data groupings at a first sample rate. A spline filter utilizes the input data along with a phase difference between input and output data to calculate a third order spline function and an output time for the input data. This information is used to convert the input data at the first sample rate to output data at a second sample rate. The output data is buffered within an output buffer until transmitted to an associated base band unit.

REFERENCES:
patent: 4707841 (1987-11-01), Yen et al.
patent: 4797845 (1989-01-01), Stikvoort
patent: 5227787 (1993-07-01), Kurashina
patent: 5461604 (1995-10-01), Hasegawa
patent: 5497152 (1996-03-01), Wilson et al.

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