Signal receiving method and device of mobile communication terminal

Abstract

The invention discloses a signal receiving method of a mobile communication terminal, which includes the steps: A. cells having signal receiving power meeting the scheduled conditions are selected as active cells; B. relative time delay is estimated and initial positions of the channel estimation window and the actual received signals of each active cell are adjusted; C. service signals are separated and the joint detection processing of macro diversity to the service signals is carried out by using the adjusted channel estimation window of each active cell. The processed signals can be received as effective service signals. Meanwhile, the invention also discloses a signal receiving device of the mobile communication terminal. By adopting the method and the device of the invention, interference signals can be received as effective signals, thus improving the performance of the mobile communication terminal in signal receiving.

Description

technical field The present invention relates to mobile communication technology, in particular to a signal receiving method and device for a mobile communication terminal. Background technique With the increase of mobile communication bandwidth, a mobile TV service appears in the field of mobile communication, which enables mobile communication terminals, such as mobile phones, to receive and play TV programs. The mobile TV service in the mobile communication system belongs to the broadcast and multicast service. In the existing communication system, the broadcast and multicast service is mainly realized by sending the same information at the same time at the base stations of each cell. For example, in a wireless communication system using code division, multiple The base stations use the same physical resources such as carrier frequency, time slot and code channel to send information. When the mobile communication system implements broadcast and multicast services, the b...

AI Technical Summary

Problems solved by technology

In order to offset the interference of adjacent base stations, the existing technology uses a large spreading gain to spread the signal of the base station of the cell to which it belongs, but this will inevitably limit the transmission rate of the service signal

Because the service transmission rate is inversely proportional to the spread spectrum gain, if you want to ensure a high service transmission rate, you can only make the spread spectrum gain as small as possible or even make the spread spectrum gain 1, so that the interference of adjacent base stations cannot be offset, and the broadcast group The broadcasting service will not be practically applicable

From the above analysis, it can be seen that in the prior art, because the mobile communication terminal only regards the signal of the cell it belongs to as an effective signal, and the signal of the adjacent cell is treated as an interference signal, the performance of the mobile communication terminal receiving the signal is very poor, and the service data transmission rate is low. , which limits the application of broadcast and multicast services

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