Base vector matrix compression device based on high-speed systolic array and Givens transformation
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A technology of pulsation array and compression device, applied in the field of basis vector matrix compression device
Active Publication Date: 2015-03-25
南京易太可通信技术有限公司
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However, on the one hand, due to the time-varying nature of the wireless channel, the feedback channel information is only valid within a short coherence time; :short inter-frame space), the receiver must calculate the angle information to be fed back
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Embodiment 1
[0069] A base vector matrix compression device with a dimension of 4×4 based on a high-speed systolic array and Givens transform. In this embodiment, assume that the dimension of the input basis vector matrix V is 4×4, and V is defined as:
[0070] V = V 1,1 V 1,2 V 1,3 V 1,4 V 2,1 V 2,2 V 2,3 V 2,4 ...
Embodiment 2
[0078] A base vector matrix compression device with a dimension of 2×2 based on a high-speed systolic array and Givens transform In this embodiment, assume that the dimension of the input basis vector matrix V is 2×2, and V is defined as:
[0079] V = V 1,1 V 1,2 V 2,1 V 2,2 - - - ( 23 )
[0080] Compression devices such as image 3 As shown, the difference between this embodiment and the previous embodiment is that the whole device has only 4 processing units, and the processing units P11 and P12 constitute a prepr...
Embodiment 3
[0085] A base vector matrix compression device with a dimension of 4×2 based on a high-speed systolic array and Givens transform In this embodiment, assume that the dimension of the input basis vector matrix V is 4×2, and V is defined as:
[0086] V = V 1,1 V 1,2 V 2,1 V 2,2 V 3,1 V 3,2 V 4,1 V 4,2...
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Abstract
The invention discloses a base vector matrix compression device based on a high-speed systolic array and Givens transformation. The base vector matrix compression device is applied to a base vector matrix V with the dimensionality of M*N (M>=N) and comprises a preprocessing module and a compression module, wherein the preprocessing module is composed of a first-kind preprocessing unit and second-kind preprocessing units; the compression module is composed of real number processing units, Givens rotation processing units and simplified Givens rotation processing units. The base vector matrix compression device can guarantee the regularity of hardware implementation and parallel flow processing of data, is high in universality and can achieve compression of any base vector matrix with the dimensionality of M*N.
Description
technical field [0001] The invention relates to a basis vector matrix compression device based on a high-speed pulsation array and Givens transformation, and belongs to the technical fields of signal processing and wireless communication. Background technique [0002] The IEEE 802.11n standard provides two channel information feedback methods, namely implicit feedback and explicit feedback. Three feedback formats are defined for explicit feedback: CSI feedback, right singularity of the singular decomposition of the uncompressed channel state matrix Matrix feedback and compressed feedback of right singular matrices for singular decomposition of channel state matrices. Right singular matrix feedback for CSI feedback and singular decomposition of the uncompressed channel state matrix requires a large number of bits for the necessary dynamic range and quantization accuracy. Therefore, the IEEE 802.11ac standard only provides a compressed feedback method, and the millimeter wave...
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