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Method for the robust synchronization of a multi-carrier receiver using filter banks and corresponding receiver and transceiver

A filter bank and receiver technology, which is applied in wavelet modulation carrier system, shaping network in transmitter/receiver, carrier adjustment, etc., can solve problems such as performance degradation

Inactive Publication Date: 2010-06-16
ACN ADVANCED COMM NETWORK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Another limitation of prior art devices and methods is that their performance is degraded when some frequency bands within the operating frequency band cannot be used for sustained coexistence

Method used

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  • Method for the robust synchronization of a multi-carrier receiver using filter banks and corresponding receiver and transceiver
  • Method for the robust synchronization of a multi-carrier receiver using filter banks and corresponding receiver and transceiver
  • Method for the robust synchronization of a multi-carrier receiver using filter banks and corresponding receiver and transceiver

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Embodiment Construction

[0047] figure 1 It is a simplified block diagram of a multi-carrier transceiver using a filter bank according to a preferred embodiment of the present invention. The transceiver includes a transmitter 100 and a corresponding receiver 300 using, for example, a discrete cosine modulation filter bank, a wavelet packet filter bank, or a complex modulation filter bank.

[0048] The transmitter 100 and the receiver 300 can communicate with each other through the communication channel 200. In the following description, it is assumed that the communication channel 200 is baseband or bandpass and noisy, and has highly frequency selective attenuation and phase response. Such communication channels can be encountered, for example, in broadband communication via power lines. However, any wired, wireless or hybrid communication channel can be used with the transceiver of the present invention.

[0049] The transceiver 100 includes a modulator 10 using a filter bank such as a discrete cosine m...

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Abstract

Synchronization method for a multi-carrier transceiver using a filter bank, for example a cosine modulated filter bank, a wavelet packet filter bank or a complex modulated filter bank, the transceiver comprising a transmitter (100) and a receiver (300) able to communicate with each other over a communication channel (200), the method comprising the following steps: sending a periodic and coded training sequence over the communication channel (200) with the transmitter (100), determining in the receiver (300) time alignment information from the received training sequence, performing a coarse synchronization of the receiver (300) to said transmitter (100) using said time alignment information, sending modulated data (1) in data mode over the communication channel (200) with the transmitter (100), pilot signals being multiplexed into said data (1), tracking sampling frequency offset and phase jitter within the receiver (300) using the pilot signals, performing the continuous synchronization of the transceiver with the help of the tracking information determined in the step of tracking. The invention also relates to a multi-carrier transceiver, consisting of a transmitter (100) and a receiver (300),able to perform this synchronization method.

Description

Technical field [0001] The present invention relates to a synchronization used in a multi-carrier transceiver using a filter bank such as a cosine modulation filter bank, a wavelet packet filter bank or a complex modulation filter bank when the signal-to-noise ratio and large frequency offset are extremely low Method and receiver suitable for performing this method. Background technique [0002] Prior art synchronization methods have been developed for single tone carrierless amplitude modulation (CAP) or for digital multi-tone (DMT) and orthogonal frequency division multiplexing (OFDM) transceivers. [0003] The sensitivity of DMT and OFDM transceivers to carrier frequency offset and phase noise is a well-known disadvantage of these modulation techniques relative to CAP modulation. [0004] Multi-carrier transceivers using digital filter banks such as cosine modulation filter banks, wavelet packet filter banks, or complex modulation filter banks have better spectral properties than...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/03H04L27/00H04L27/26H04B3/54
CPCH04L27/0004H04L25/03273H04L2027/0053H04L27/264H04L25/03006H04L27/2657H04L27/2655H04L2027/0089H04L2027/003H04L27/2675H04B2203/5445H04L27/2679H04L25/03114H04L27/2654H04L27/26416
Inventor D·达利A·贾明斯蒂芬·霍瓦思
Owner ACN ADVANCED COMM NETWORK
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