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Communication system and bit loading method used in the communication system

A technology of bits and data bits, applied in the field of power line communication systems, can solve the problems of unused frequency bands, not optimal use of available channels, etc., and achieve the effect of avoiding complex error correction

Inactive Publication Date: 2018-08-14
XSILON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this approach leaves most of the available frequency band unused for any given symbol, and thus does not make optimal use of the available channels

Method used

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  • Communication system and bit loading method used in the communication system
  • Communication system and bit loading method used in the communication system
  • Communication system and bit loading method used in the communication system

Examples

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Embodiment Construction

[0067] figure 1 A power line communication network 1 forming an embodiment of the invention is shown. The signal is sent on the AC power line 3. In this embodiment, the network 1 is used for the home energy monitoring and management system, but the network 1 can also be used for other applications. The smart meter 5 is connected to the power line 3 in the home. Smart Meter 5 includes a modem (in figure 2 An example of this is shown in more detail in), the modem communicates with similar modems associated with electronic devices 7, 15 that receive electrical power from the power line 3 through a standard socket 9 or through a permanent wired connection 17. In the case of the electrical device 7, the modem is integrated in the electronic device 7. In the case of the electrical device 15, there is no modem integrated in the device 15 itself. On the contrary, the modem is integrated in the power plug 11 of the device 15, and is integrated in the power adapter 13 (for example, mu...

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PUM

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Abstract

A communication system includes a transmitter, receiver, and channel. The transmitter sends multiple copies of each data bit in a matrix of modulation schemes with a multi-dimensionality chosen from frequency, time and code. Each dimension is divided into subgroups. A bit-loading method is used such that copies of each data bit (b11, b12, b13) are allocated according to a predetermined arrangement within the matrix such that within each dimension, copies of the same data bit are located in different subgroups.

Description

Technical field [0001] The invention relates to a communication system and a bit loading method used in the communication system. In particular, the present invention relates to a power line communication system in which multiple copies of data bits are transmitted in a matrix of multi-dimensional modulation schemes, the dimensions being selected from frequency, time and code. Background technique [0002] In the design of digital modems, coding and modulation schemes are selected to maximize performance in terms of data throughput and robustness, while minimizing design complexity. Robustness is usually characterized by signal-to-noise ratio performance, but it also refers to immunity to interference or noise pulses. Low complexity design can get low cost, small size and low power consumption. Good performance and low complexity are often conflicting requirements, and therefore modem design involves finding the best compromise for the application. [0003] Some modem systems ar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/00H04B3/54
CPCH04B3/54H04L5/0046H04B2203/5416H04B2203/5454H04L5/0016
Inventor 克里斯托弗·大卫·希尔顿梅于尔·梅赫塔迈克尔·保罗·贝克
Owner XSILON