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Communication system, receiving device and method thereof

A technology for receiving devices and communication systems, applied in baseband systems, transmission systems, multi-frequency code systems, etc., can solve problems such as high cost, and achieve the effects of improving signal reconstruction, maintaining performance, and improving likelihood

Active Publication Date: 2020-12-15
XFUSION DIGITAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

even from arrive The projection of will also be a one-to-one mapping. Since K is usually very large, the cost of inverting G through exhaustive search will be very high

Method used

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  • Communication system, receiving device and method thereof
  • Communication system, receiving device and method thereof
  • Communication system, receiving device and method thereof

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Embodiment Construction

[0076] Embodiments of the invention relate to using spectral precoding knowledge in soft symbol estimation receivers. Embodiments of the present invention are applicable to any transmission of any data type precoded by an orthogonal projection precoder, such as a spectral precoder. Once the projection precoded data is received by the receiver, the received data symbols are processed by the receiver. The inventors have realized that projective precoding at the transmitting device results in different static interference levels in the symbol indices. Thus, the receiver can improve its sign estimation based on the knowledge of the projective precoder used at the sending device.

[0077] The disadvantage of conventional solutions as opposed to the present solution is that the same symbol estimation is done for each index even though they include different interference levels from the spectral precoder. The consequence of this is that the performance of conventional solutions cor...

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Abstract

The invention relates to a receiving device of a communication system (500), said receiving device (100) comprising a receiver (102) configured to receive a data signal r comprising data precoded with an orthogonal projection precoding matrix G; Calculate the signal-to-interference-noise ratio SNIR of the transmitted data symbol of the data signal r based on the precoding matrix G; use the precoding matrix G to filter the data signal r to obtain a filtered data signal; based on the calculated Calculate the likelihood of the transmitted data symbols from the SNIR and the filtered data signal r. Furthermore, the invention also relates to a corresponding method, a wired or wireless communication system, a computer program and a computer program product.

Description

technical field [0001] The invention relates to a receiving device for a wired or wireless communication system. Furthermore, the invention also relates to a corresponding method, a wired or wireless communication system, a computer program and a computer program product. Background technique [0002] Orthogonal frequency division multiplexing (OFDM) is the air interface of many communication systems such as Long Term Evolution (LTE). High out-of-band (OOB) emissions are the main drawback of OFDM. Out-of-band emissions can degrade overall system performance because they can interfere with adjacent frequency bands, or need to include large guard bands to limit interference. [0003] One solution to this problem is spectral precoding, which reduces OOB by precoding data symbols before feeding them to the OFDM modulator at transmit. A projection precoder is a spectral precoding method that projects a vector of data symbols to restrict the transmission to a specific data subs...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/03H04L27/26
CPCH04L25/03159H04L25/03821H04L25/03828H04L2025/03522
Inventor 雷诺德-亚历山大·皮塔沃布兰尼斯拉夫·波波维奇
Owner XFUSION DIGITAL TECH CO LTD