Receiver capable of self-adaptively selecting Grake tapping number and method for detecting received signal

Abstract

The present invention provides a receiver of adaptively selecting Grake tap number and its receiving signal detection method, the receiver includes a filter module, a descrambling dispreading module and a Grake symbol-rate detection module connected in turns, a channel estimation module is connected between the filter module and the Grake symbol-rate detection module, and an adaptive tap selection module is connected between the filter module and the descrambling dispreading module. Firstly, the relationship of all kinds of combinations of the channel environment, the modulation coding pattern and the channel quality parameter interval and the selecting receiver tap number is established in the receiving end; when the signal achieves the receiving end, the receiving end acquires information and identifies the present channel environment by the channel estimation, searching the selecting receiver tap number by combing MCS and channel quality parameter selected by the present transmission data, then detecting the receiving data by the acquired channel information and determined receiver tap number. The invention reduces the complexity of the detection under the condition of meeting the requirement.

Description

technical field [0001] The invention relates to the technical field of receivers of communication systems, in particular to a receiver in a high-speed downlink packet access (HSDPA) system and a detection method for a received signal. Background technique [0002] HSDPA is an enhanced technology proposed by 3GPP Release5, and its main goal is to obtain lower delay, higher system throughput capacity and stronger service quality (QoS) guarantee. From a technical point of view, HSDPA is mainly accomplished by introducing a high-speed downlink shared channel (HS-DSCH) to enhance the air interface and adding corresponding functional entities in the Global System for Mobile Communications Radio Access Network (UTRAN). From the bottom layer, it mainly introduces Adaptive Modulation Coding (AMC) and Hybrid Automatic Repeat Request (HARQ) technology to increase data throughput. From the point of view of the overall architecture, it mainly enhances the processing function of the base...

AI Technical Summary

Problems solved by technology

[0013] The technical problem to be solved by the present invention is to provide a receiver and its receiving method for adaptively selecting the number of Grake taps in the high-speed downlink packet access system, which can reduce the complexity of detection under the premise of meeting the performance requirements

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