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Zero-delay communication method combined with 1-bit analog-to-digital converter and application of zero-delay communication method

An analog-to-digital converter and communication method technology, applied in the direction of analog-to-digital converters, etc., can solve problems such as the resolution limitation of analog-to-digital converters, and achieve the effect of improving distortion performance

Pending Publication Date: 2021-11-09
SUN YAT SEN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When available power is limited, such as for battery-constrained sensor nodes or mobile devices, the resolution of the analog-to-digital converter is limited

Method used

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  • Zero-delay communication method combined with 1-bit analog-to-digital converter and application of zero-delay communication method
  • Zero-delay communication method combined with 1-bit analog-to-digital converter and application of zero-delay communication method
  • Zero-delay communication method combined with 1-bit analog-to-digital converter and application of zero-delay communication method

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Embodiment 1

[0088] Such as figure 1 and figure 2 As shown, this example provides a zero-latency communication method combined with a 1-bit analog-to-digital converter, including:

[0089] Step 1: Encoding mapping initialization: two sources x 1 and x 2 After being encoded by the encoder, the noise superposition, 1-bit analog-to-digital converter and decoder are respectively used to obtain x 1 and x 2 The estimated signal of i=1 or 2, the estimated signal The formula of is shown in formula (2):

[0090]

[0091] p(x 1 ,x 2 ) represents the joint probability density function, p(z i |α(x 1 ,x 2 )) means known α(x 1 ,x 2 Conditional probability density function under ), z i is the output of a 1-bit ADC; the z i The formula of is shown in formula (3): Y i is the channel output after noise superimposition.

[0092] And obtain the cost function J, said J is shown in formula (1):

[0093]

[0094] α is the encoding map of the encoder, β 1 is the source x 1 The decod...

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Abstract

The invention relates to the field of wireless communication, in particular to a zero-delay communication method combined with a 1-bit analog-to-digital converter and application of the zero-delay communication method. The method includes the following steps of: 1, initializing coding mapping; and 2, updating coding mapping. Compared with the current coding scheme of source-channel separation, the method considers the combination of source coding and channel coding, and realizes the transmission of the related source on the broadcast channel by adopting the coding scheme of the joint source channel. In consideration of an extreme condition, a single signal sample is transmitted through one-time channel transmission, so that the requirement of zero-delay transmission is met. In this case, zero-delay transmission of a related Gaussian information source on a broadcast channel combined with the front end of a 1-bit analog-to-digital converter is considered, initial coding mapping is optimized in a non-parametric mapping mode under a determined distortion standard by combining a broadcast channel model of the front end of the 1-bit analog-to-digital converter, and it is found that the method can improve the distortion performance of the system.

Description

technical field [0001] The present invention relates to the field of wireless communication, and more specifically, the present invention relates to a zero-delay communication method combined with a 1-bit analog-to-digital converter and its application. Background technique [0002] Modern wireless communication systems achieve reliable transmission of certain high-rate content types, such as Joint Photographic Experts Group (JPEG) and Moving Picture Experts Group (MPEG), by utilizing channel coding that approaches channel capacity and highly optimized compression algorithms. However, many emerging applications, such as the Internet of Things (IOT) or machine-to-machine communication (M2M), further limit the cost and complexity of communication equipment, or impose higher requirements on available energy and end-to-end delay, which Many known coding methods and modulation techniques are no longer applicable. [0003] Broadcast communication is a communication method that us...

Claims

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Application Information

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IPC IPC(8): H03M1/12
CPCH03M1/12
Inventor 赵伟杰陈雪晨楚盛
Owner SUN YAT SEN UNIV