Showing papers by "Matti Latva-aho published in 1995"

Dynamic control of acquisition and tracking of the correlators in a RAKE receiver

Abstract: A receiver and a method for controlling a receiver, the receiver being implemented on the RAKE principle and comprising a number of correlators (30a-30d) which are able to synchronize with a received signal To effectively utilize the correlators of the receiver, the operation mode of the correlators in the receiver is changed dynamically in the method of the invention between the received signal tracking and acquisition modes according to the need

Method for controlling a receiver, and a receiver

Abstract: A receiver and a method for controlling a receiver, the receiver being implemented on the RAKE principle and comprising a number of correlators (30a-30d) which are able to synchronize with a received signal. To effectively utilize the correlators of the receiver, the operation made of the correlators in the receiver is changed dynamically in the method of the invention between the received signal tracking and acquisition modes according to the need.

Spread spectrum receiver using absolute-value determination for code tracking

Abstract: A receiver comprising a digital code tracking loop which receives an input of real and imaginary components of a received signal and in which these components are processed in different branches which each comprise a multiplier (12a-12d) and a filter (13a-13d) connected in series. To improve the characteristics of the code tracking loop in the receiver, each branch of the code tracking loop further comprises circuitry (33a-33d) for absolute-valuing the signal, the circuitry (33a-33d) being connected in series after the filters (13a-13d).