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High-speed low-complexity PAKE receiver and implementation method of high-speed low-complexity PAKE receiver

A technology for receivers and multiplexers, applied in electrical components, sustainable buildings, transmission systems, etc., can solve problems such as surge in path delay, large register resources, multiplexer resources, and connection resources, and reduce system operating clocks , to achieve high resource utilization

Inactive Publication Date: 2014-04-02
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The design idea of ​​traditional RAKE receiver is simple, and RAKE reception can be realized, but it is not difficult to find that its complexity is too high, and the required register resources, multiplexer resources and connection resources are too large
Since the data all come from the same register cache, this will lead to routing congestion, surge in path delay and slow down the system operating clock

Method used

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  • High-speed low-complexity PAKE receiver and implementation method of high-speed low-complexity PAKE receiver

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Embodiment 1

[0048] Assume that the system design RAKE receiver parameters are as follows: the RAKE receiver index is N, the maximum path delay is D sampling clocks, the oversampling multiple is K, the number of parallel input sampling points is M, and M is an integer multiple of K; its detailed structure diagram like image 3 As shown, the RAKE receiver mainly includes a matched filter, a first-stage shift register group, a first-stage multiplexer group, a second-stage shift register group, a second-stage multiplexer group, and a correlator and Merge components such as units.

[0049] Since the whole system is a linear system, the spread spectrum waveform correlation can be split into waveform matching and sequence correlation. exist image 3 In this method, the waveform matching based on the FIR mode is first performed on the sampled data, which can effectively save the logic resources used by each correlator for waveform matching.

[0050] Secondly, the first stage of multipath align...

Embodiment 2

[0054] Furthermore, by comparing with the traditional 8-finger RAKE receiver in the prior art, the design principle and great advantages of the 8-finger RAKE receiver adopting the technical solution of the present invention are illustrated.

[0055] Before discussing the RAKE circuit, it is necessary to clearly compare the parameters of the system: this system is an 8-finger SRAKE receiver, the oversampling factor is 4, the spreading factor is 8, the number of parallel input channels is 8, and the maximum path delay is 127 sampling clocks . The input data sampling rate of RAKE is 1GSPS, input in 125MHz 8-way parallel mode, and the output data rate is 1G / 32=31.25Mbps.

[0056] If a traditional RAKE receiver is used, its functional block diagram is as follows Figure 4 shown. The specific design scheme is as follows: First, the sampling data is input into the shift register group for multipath delay alignment. Since the channel response delay ranges from 0 to 127, a total of 7...

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Abstract

The invention relates to a high-speed low-complexity PAKE receiver and an implementation method of the high-speed low-complexity PAKE receiver. A hardware implementation structure of the traditional PAKE receiver is subjected to system optimization under the precondition of achieving receiving performance of the PAKE so as to reduce the use of resources of a register and a multiplexer and improve the work clock of the system. The high-speed low-complexity PAKE receiver disclosed by the invention has the following characteristics: 1) greatly reducing the use of the resources of the register and the multiplexer by grading PAKE receiver and effectively saving the hardware resource compared with the traditional PAKE receiver, 2) better reducing the problems of wiring congestion and path delay explosion when the system is integrated by a stage design scheme and improving the work clock of the system, 3) effectively reducing hardware power consumption of the PAKE receiver and having wide application space on emphasis of a low-power wireless sensor network and a single-carrier ultra-wide band because of saving a great number of logic resources.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a RAKE receiver in a short-distance high-speed communication system. Background technique [0002] Single Carrier Ultra WideBand (SC-UWB), as one of the current main ultra-wideband implementation schemes, has a simple transceiver structure, low requirements for radio frequency linearity, and easy implementation of low-cost, low-power single-chip integration, etc. Advantages, has become a hot topic in the field of short-distance high-speed communication. [0003] Generally speaking, in a dense and complex multipath environment, such as UWB indoor channel environment or UWB WBAN (Wireless Body Area Network, wireless body area network) channel, effective anti-multipath fading technology is needed to improve the system bit error rate performance and robustness. For the OFDM system, since the equivalent channel on each subcarrier is a flat fading channel, only simple ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/7115H04B1/06
CPCY02B60/50
Inventor 高波肖振宇张昌明裴玉奎金德鹏苏厉曾烈光
Owner TSINGHUA UNIV