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Polar Spectrum Precoded Transmission

A technology of a precoder and a precoding matrix, applied in systems for transforming transmission, computer-readable storage media storing program codes, and transforming transmission and reception fields, can solve problems such as capacity loss, inter-symbol interference, etc., and achieve spectral efficiency The effect of minimizing loss

Active Publication Date: 2021-02-09
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Projective precoders have the disadvantage of generating inter-symbol interference at the transmitter that cannot be fully mitigated at the receiver, which corresponds to a small loss in capacity
Therefore, interference cannot always be canceled at the receiver, but for OFDM systems with low MCS, it has been shown that most interference is mitigated by iterative symbol detection

Method used

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  • Polar Spectrum Precoded Transmission
  • Polar Spectrum Precoded Transmission
  • Polar Spectrum Precoded Transmission

Examples

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Embodiment Construction

[0082] figure 1 A processing unit 100 is shown. The processing unit 100 includes a transform unit 110 and a precoder 120 . Processing unit 100 may be a transmitter (not in figure 1 shown in ) as part of the processing pipeline.

[0083] The processing unit 100 is configured to replace a subset of the set of input symbols with one or more fixed symbols to obtain a transformed set of symbols. For example, the transform unit 110 may be configured to receive a set of input symbols from a previous component in the transmitter's processing pipeline.

[0084] The precoder 120 is configured to apply a precoding matrix to the transformed set of symbols to obtain a transformed and precoded set of symbols. The precoding matrix may be chosen such that out-of-band (OOB) emissions are reduced.

[0085] The subset used by the transform unit 110 is based on a variant of the precoding matrix of the precoder 120 . For example, the deformation of the precoding matrix can be directly relate...

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Abstract

A transmitter processing unit comprising: a transform unit configured to replace a subset of an input symbol set with one or more fixed symbols to obtain a transformed symbol set; and a precoder configured to transform A precoding matrix is ​​applied to the transformed set of symbols to obtain a transformed and precoded set of symbols, wherein the subset is based on a deformation of the precoding matrix.

Description

technical field [0001] The invention relates to a first processing unit and a second processing unit. The invention also relates to a system for transformation transmission and a method for transformation transmission and reception. Further, the present invention also relates to a computer-readable storage medium storing program code including instructions for performing such a method. Background technique [0002] Orthogonal frequency division multiplexing (OFDM) is the air interface of choice for many communication systems such as 3GPP LTE due to its high spectral efficiency and low implementation complexity. [0003] Single Carrier-Frequency Division Multiple Access (Single Carrier-Frequency Division Multiple Access, SC-FDMA) is a channel access method for transmission through DFT extension of OFDM subcarriers. A recognized advantage of SC-FDMA over OFDMA is its low peak-to-average-power-ratio (PAPR). For this reason, SC-FDMA has been chosen as the air interface for LT...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26
CPCH03M13/293H04L25/03834H04L27/2626H04L27/2675H03M13/6356H03M13/6362H04B7/0413H04L27/26265
Inventor 雷诺德·亚历山大·皮塔沃布兰尼斯拉夫·波波维奇
Owner HUAWEI TECH CO LTD