| 摘要 |
PCT No. PCT/FI96/00697 Sec. 371 Date Jun. 26, 1998 Sec. 102(e) Date Jun. 26, 1998 PCT Filed Dec. 23, 1996 PCT Pub. No. WO97/24819 PCT Pub. Date Jul. 10, 1997A method of detecting a call set-up burst, and a receiver, in a digital radio system, the receiver comprising a converter (304) for sampling a signal received in a given time slot, means (400) for correlating digitalized samples with a known training sequence, and means (402) for computing the energy of the correlation results obtained, means (404) for looking for the maximum values of a string of samples of a given order from the computed energies, and means (408) for averaging the maximum values found per one sample. To improve reliability of detecting a call set-up burst, the receiver comprises means (410) for averaging the energy of the other samples of the time slot per one sample, and means (412) for comparing the averaged maximum energy values with the energy values of the other samples. |
