초록 ▼

A repeater improving the effect of a RAKE reception. A received signal from a base station parallelly passes a first path including a first delay circuit and a second path including no delay circuit, and is transmitted to a mobile station. A received signal from the mobile station parallelly passes

A repeater improving the effect of a RAKE reception. A received signal from a base station parallelly passes a first path including a first delay circuit and a second path including no delay circuit, and is transmitted to a mobile station. A received signal from the mobile station parallelly passes a third path including a second delay circuit and a fourth path including no delay circuit, and is transmitted to the base station. The delay time of the delay circuits are set at one chip interval or more of a spreading code. This forcedly produces multipath waves which are resolvable by a RAKE receiver. The RAKE receiver estimates amplitudes of desired wave components for individual delayed waves, performs weighting of the respective delayed wave components from detectors by using the estimated amplitudes, and makes symbol decision in terms of the combined weighted signal.

대표청구항 ▼

A repeater for repeating transmitted and received signals between a mobile station and a base station of a mobile communication system which performs spread spectrum communications, said repeater comprising: a first receiving antenna for receiving an electric wave from said base station; a first del

A repeater for repeating transmitted and received signals between a mobile station and a base station of a mobile communication system which performs spread spectrum communications, said repeater comprising: a first receiving antenna for receiving an electric wave from said base station; a first delay circuit for providing a received signal supplied from said first receiving antenna with a predetermined amount of delay; a first transmitting antenna for radiating an output of said first delay circuit to said mobile station; a second receiving antenna for receiving an electric wave from said mobile station; a second delay circuit for providing a received signal supplied from said second receiving antenna with a predetermined amount of delay; and a second transmitting antenna for radiating an output of said second delay circuit to said base station, wherein a delay time of said first delay circuit and a delay time of said second delay circuit are set at one chip interval of a spreading code or more.