| 摘要 |
A method and an apparatus for generating an error estimate as input for an error recovery loop of a demodulator which receives an offset quadrature phase shift keyed (OQPSK) signal having a symbol interval. The method comprises the following operations: (a) receiving at least four consecutive complex samples z-+E,fra 1/2+EE , z0, z+E,fra 1/2+EE and z1 obtained by sampling the OQPSK signal at half the symbol interval; and (b) computing the error estimate based on the complex samples z-+E,fra 1/2+EE , z0, z+E,fra 1/2+EE and z1.
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