Signal receiving method and device of mobile communication terminal

Abstract

The invention discloses a signal receiving method of a mobile communication terminal. The method comprises: A. selecting a cell whose signal receiving power reaches a predetermined condition as an activated cell; B. estimating the relative time delay, and adjusting the channel estimation window and the actual The starting position of the received signal; C. Separate the service signal, use the adjusted channel estimation window of each activated cell to perform macro-diversity joint detection processing on the service signal, and receive the processed signal as an effective service signal. The invention also discloses a signal receiving device of the mobile communication terminal at the same time. By adopting the method and device of the invention, the interference signal can be received as an effective signal, and the signal receiving performance of the mobile communication terminal is improved.

Description

technical field [0001] The present invention relates to mobile communication technology, in particular to a signal receiving method and device for a mobile communication terminal. Background technique [0002] 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. [0003] When the mobile communication system implements broadcast and m...

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Problems solved by technology

[0004] 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

[0005] 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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