Basic odd-even merge grid unit and survivor path selection and construction method and device

A construction method and grid unit technology, applied in the direction of space transmit diversity, diversity/multi-antenna systems, etc., can solve problems such as limitations and achieve the effect of reducing demand

Active Publication Date: 2016-01-27
RDA CHONGQING MICROELECTRONICS TECH CO LTD
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Problems solved by technology

[0024] In the QRM-MLD tree search process, according to the above method, it is easy to construct a path selection in which the input path measures the number of input paths as an integer power of 2, but in the QRM-MLD tree search process, the existing odd-even merge sort When the grid is used for surviving path selection, when the number of input paths is not an integer power of 2 or the number of sorted paths in the two groups is not equal, the use of traditional odd-even merge sorting grids is greatly limited in specific mobile communication systems

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  • Basic odd-even merge grid unit and survivor path selection and construction method and device
  • Basic odd-even merge grid unit and survivor path selection and construction method and device
  • Basic odd-even merge grid unit and survivor path selection and construction method and device

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[0075] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0076] The following assumes that ascending order is figure 1 The right side basically compares the exchange unit for illustration, but obviously the corresponding technical solution is also applicable to the descending order, that is, figure 1 The left side basically compares the swap unit.

[0077] The embodiment of the present invention provides a method for constructing a basic odd-even merge grid unit, which can use the odd-even merge-sort grid to construct a...

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Abstract

The embodiment of the invention discloses a basic odd-even merge grid unit and survivor path selection and construction method for performing odd-even merging and sorting on an input path which is not an integer power of 2. The method comprises steps of: adding input paths and marking the positions of the added input paths in order that the number of all input paths is equal to the integer power of 2; filling the added input paths with path magnitude values; performing odd-even merging and sorting according to the magnitude values of all the input paths in order to obtain sorted input paths; deleting the input paths with marked positions in the sorted input paths to obtain the residual input paths; and linking the residual paths in the residual input paths and using the link as the input of a basic comparison exchange unit.

Description

technical field [0001] The invention relates to a signal detection technology in a multiple input and multiple output (Multiple Input and Multiple Output, MIMO for short) system, in particular to a basic parity merged grid unit. Background technique [0002] In the MIMO system, the transmitting end uses multiple antennas to transmit signals, and similarly, the receiving end uses multiple antennas to receive signals. [0003] Among them, the received signal can be expressed as: [0004] r=Hs+n (Formula 1) [0005] where H is n R ×n T of (assuming n R ≥n T ) channel state matrix, r is n R ×1 received signal vector, s is n T ×1 transmit signal vector, n is n R The mean value of ×1 dimension is 0, and the variance is σ 2 Additive white Gaussian noise vector of . [0006] In signal detection, if the QRM-MLD method is used, for n R ×n T Dimensional channel state matrix H for QR decomposition. get: [0007] H=QR (Formula 2) [0008] where the matrix Q is n R ×n T D...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/04
Inventor 吴广富翁明江林峰
Owner RDA CHONGQING MICROELECTRONICS TECH CO LTD
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