A method and device for determining a channel transfer function of a physical downlink shared channel
A technology of physical downlink sharing and transfer function, applied in wireless communication, network traffic/resource management, shaping network in transmitter/receiver, etc. cost, performance improvement, and efficiency of use
Active Publication Date: 2015-08-19
ALCATEL LUCENT SHANGHAI BELL CO LTD
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[0003] However, although the two-dimensional Wiener filtering in the prior art has a good technical effect on the scattered pilot structure, it cannot effectively solve the problem of estimating the channel transfer function of the physical shared downlink channel PDSCH of LTE, mainly because the The reference signal grid is sparse and unbounded on the edges of the frequency domain and time domain, which means that the two-dimensional Wiener filtering technique needs to occupy a larger number of filters, thus requiring more storage space
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[0021] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0022] figure 1 A schematic diagram showing a device for determining a channel transfer function of a physical downlink shared channel according to one aspect of the present invention. Wherein, the mobile station device 1 includes receiving means 11 , linear filtering means 12 , Wiener filtering means 13 and first determining means 14 .
[0023] Wherein, the receiving device 11 is configured to receive one or more first reference signals. Specifically, the receiving device 11 receives one or more first reference signals sent from the base station to the mobile station device 1 according to communication protocols, including but not limited to GPRS, CDMA, CDMA2000, WCDMA, TD-SCDMA, LTE and other communication protocols. Here, the mobile station device 1 includes, but is not limited to, a vehicle-mounted mobile station, a portable mobile station, a handheld m...
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The invention aims at providing a method and equipment for determining a channel transmission function of a physical downlink shared channel. The method comprises the following steps of: receiving one path or multiple of paths of first reference signals by mobile station equipment; carrying out frequency domain filtering processing on a first reference signal by a linear finite impulse response filter so as to obtain the first reference signal subjected to the frequency domain filtering processing; carrying out time domain filtering processing on the first reference signal subjected to the frequency domain filtering processing by a Weiner filter so as to obtain a first reference signal subjected to the time domain filtering processing; and acquiring a first channel transmission function corresponding to the first reference signal according to the first reference signal subjected to the time domain filtering processing. Compared with the prior art, due to the combining of linear filtering with Weiner filtering, the channel transmission function of the physical downlink shared channel is determined, further, the transmission performance of the channel data is improved, the use efficiency of a storage space is increased, and the realization cost of the technology is reduced.
Description
technical field [0001] The invention relates to the technical field of mobile communication, in particular to a technology for determining the channel transfer function of a physical downlink shared channel. Background technique [0002] In order to obtain better data transmission efficiency, people usually need to determine the channel transfer function of the channel to be used for data transmission, which is especially important for the future wireless communication technology LTE that comprehensively adopts time division duplex TDD and frequency division duplex FDD. [0003] However, although the two-dimensional Wiener filtering in the prior art has a good technical effect on the scattered pilot structure, it cannot effectively solve the problem of estimating the channel transfer function of the physical shared downlink channel PDSCH of LTE, mainly because the The reference signal grid is sparse and unbounded on the edges of the frequency domain and the time domain, whic...
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IPC IPC(8): H04L25/02H04L25/03H04W28/16
Inventor 赵光玲郭彬徐洋蒋智宁
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD