Method for performing loop unrolled decision feedback equalization in an electronic device

A technology of decision feedback equalization and electronic equipment, which is applied to the shaping network, electrical components, baseband system, etc.

Active Publication Date: 2016-03-09
MEDIATEK INC
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

In another example, legacy receivers may fail easily when recovering data when encount

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  • Method for performing loop unrolled decision feedback equalization in an electronic device
  • Method for performing loop unrolled decision feedback equalization in an electronic device
  • Method for performing loop unrolled decision feedback equalization in an electronic device

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[0015] Certain terms are used in the specification and following claims to refer to particular elements. Those skilled in the art should understand that manufacturers may use different terms to refer to the same element. This description and the following claims do not use the difference in name as the way to distinguish components, but the difference in function of the components as the basis for the difference. The "comprising" mentioned throughout the specification and the following claims is an open-ended term, so it should be interpreted as "including but not limited to". In addition, the term "coupled" herein includes any direct and indirect means of electrical connection. Therefore, if it is described herein that a first device is electrically connected to a second device, it means that the first device may be directly connected to the second device, or indirectly connected to the second device through other devices or connection means.

[0016] figure 1 is a schemat...

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Abstract

A method for performing loop unrolled decision feedback equalization (DFE) and an associated apparatus are provided. The method includes: receiving a tap control signal and an offset control signal from a digital domain of a DFE receiver in an electronic device, and generating DFE information respectively corresponding to the tap control signal and the offset control signal in an analog domain of the DFE receiver; broadcasting the DFE information respectively corresponding to the tap control signal and the offset control signal toward comparators in the DFE receiver; utilizing the comparators to perform comparison operations according to the DFE information respectively corresponding to the tap control signal and the offset control signal to generate comparison results; and selectively adjusting the tap control signal and the offset control signal according to the comparison results, to optimize the DFE information respectively corresponding to the tap control signal and the offset control signal, respectively. The method and the apparatus can adaptively adjust equalization information input to the comparators in the receiver such as the DFE receiver.

Description

technical field [0001] The present invention relates to delivering accurate equalization information to a comparator in a receiver, and more particularly to a method and related apparatus for performing loop unrolled decision feedback equalization (DFE) in an electronic device. Background technique [0002] According to the prior art, in order to overcome the intersymbol interference (ISI) caused by the channel loss, the conventional receiver of the conventional system usually implements by changing the sampling threshold to improve the signal-to-noiseratio (SNR). For example, by employing a predictive DFE structure, a conventional receiver can sample data at different time points with different thresholds (eg, threshold LEV_H or LEV_L) to compensate for the 1st postcursor (or TAP1 ) based on previous data. However, some problems may arise. For example, conventional receivers may incorrectly reproduce data when receiving a signal. In another example, in the case of encount...

Claims

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Application Information

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IPC IPC(8): H04L25/03
CPCH04L25/03057H04L25/03885H04L2025/03484H04L2025/0349H04L2025/03777H04L2025/03808
Inventor 周宗信林志宪王怀德陈柏均骆彦彬
Owner MEDIATEK INC
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