Radio communication coding and decoding method using variable length signal to express digital data

A digital data and wireless communication technology, applied in the field of wireless communication codec, can solve the problems of proportional extension of transmission time, increased power consumption of devices at both ends of transmission/reception, and prolonged transmission time, etc.

Inactive Publication Date: 2008-11-26
ELAN MICROELECTRONICS CORPORATION
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Problems solved by technology

However, when using the Manchester coding method to transmit a large amount of data, each bit (bit) often occupies the same unit time, so when the amount of data is larger, the transmission time is proportionally extended.
[0011] For example, please refer to FIG. 8 , which is a schematic diagram of encoding two bytes (2Bytes=16bits) using the Manchester encoding method. The data to be transmitted is 01100011_01011110, and the transmitting end (TX) performs this two-byte encoding. The coded form is as shown in the figure, and because each bit must take the same unit time (2T) to represent, the total time spent is 16×2T=32T, so we can know this kind of coding method When the amount of data is huge, the transmission time will be prolonged, which will increase the power consumption of the devices at the transmitting / receiving ends

Method used

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  • Radio communication coding and decoding method using variable length signal to express digital data
  • Radio communication coding and decoding method using variable length signal to express digital data
  • Radio communication coding and decoding method using variable length signal to express digital data

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Embodiment Construction

[0034] The concept of the present invention is to encode the "1" and "0" in the digital data with signals of different widths (T). Specifically, please refer to FIG. 1, which is an embodiment using the encoding concept of the present invention. When the "0" signal of digital data is to be transmitted, it is represented by one unit time width (T), and if the digital data to be transmitted is "1", it is represented by two unit time widths (2T), and adjacent There are different levels between data (from high level to low level, or from low level to high level).

[0035] Please refer to Figure 2 for a comparison diagram between the encoding method of the present invention and a commonly used encoding method. Assuming that the digital data to be transmitted is 01100011_01011110, the encoding of the present invention uses the aforementioned "0" in a unit of time, "1 "After encoding the data in two units of time, you can get the data transmission pattern shown in Figure 2(A) between sect...

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Abstract

This invention relates to a radio communication encoding / decoding method expressing digital data by variable length signals including defining a unit time T first to transmit the high level bits in continuous digital data with NXT and deliver the low level bits with MXT, by presenting different transfer time lengths to bit signals in high and low different levels, the general transferring time will be greatly shortened to reduce electricity cost for transmit / receive devices.

Description

Technical field [0001] The present invention is a wireless communication coding and decoding method that uses variable-length signals to express digital data, especially a method that defines different transmission time lengths for high and low level signals in digital data, so that the total time length of data transmission can be Greatly shorten, and reduce the power consumption of the signal transmitting / receiving device. Background technique [0002] Regarding the basic concept of wireless transmission technology, the transmitter first encodes the digital data string to be transmitted, and then modulates it into an analog format, and the data is in the analog format in the transmission medium (such as radio waves, infrared, etc.) After that, when the receiving end receives the series of analog signals, it amplifies the analog signals and demodulates them to restore them to digital signals. After a series of decoding steps, the series of digital signals become original digital...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/00H03M7/40
Inventor 林奇达
Owner ELAN MICROELECTRONICS CORPORATION
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