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Cyclic shift selection for MIMO narrowband power line communications

A technology of power line communication and collision rate, which is applied in distribution line transmission system, wireless communication, wired transmission system, etc., and can solve problems such as limiting system performance and data rate

Active Publication Date: 2016-04-06
TEXAS INSTR INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The PLC channel is known to be a highly challenging environment for digital communications as it has to contend with bursts of impulsive noise which can be highly random
Further, frequency selective channels of PLC can significantly limit system performance and data rate

Method used

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  • Cyclic shift selection for MIMO narrowband power line communications
  • Cyclic shift selection for MIMO narrowband power line communications
  • Cyclic shift selection for MIMO narrowband power line communications

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Embodiment Construction

[0043] Specific embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. In the Detailed Description of the Embodiments of the Invention, numerous specific details are set forth in order to provide a thorough understanding of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without these specific details. In other instances, known features have not been described in detail to avoid unnecessarily complicating the description. As used herein, the term "coupled" is intended to mean an indirect or direct electrical connection, unless limited to "communicatively coupled," which may include wireless connections. Thus, if a first device couples to a second device, that connection may be through a direct electrical connection or through an indirect electrical connection via other devices and connections.

[0044] Referring now to the drawings, and more part...

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Abstract

The invention relates to cyclic shift selection for MIMO narrowband power line communications. A PLC network system and method operative with OFDM for generating MIMO frames with suitable preamble portions configured to provide backward compatibility with legacy PLC devices and facilitate different receiver tasks such as frame detection and symbol timing, channel estimation and automatic gain control (AGC), including robust preamble detection in the presence of impulsive noise and frequency-selective channels of the PLC network. A MIMO PLC transmitter device may selectively vary amounts of cyclic shift (CS) for different transmit phases based on whether an initial CS vector elicits an ACK signal back from a PLC receiver within a timeout period.

Description

[0001] Declaration of Priority and Related Patent Applications [0002] This formal application claims priority based on the following prior U.S. Provisional Patent Application(s): (i) Application No. 62 / 057,649 filed September 30, 2014 in the names of Mostafa Sayed Ibrahim, Il Han Kim, Tarkesh Pande and Anuj Batra "FRAMESTRUCTUREANDROBUSTPREAMBLEDETECTIONFORMIMONARROWBANDPOWERLINECOMMUNICATION (Frame Structure and Robust Preamble Detection for MIMO Narrowband Power Line Communications)"; (ii) Application No. 62 / 057,661, filed September 30, 2014 in the name of Mostafa Sayed Ibrahim, IlHanKim, TarkeshPande and AnujBatra “CYCLICSHIFTSELECTIONFORTHETRANSMISSIONOFMIMONARROWBANDPOWERLINECOMMUNICATION(用于MIMO窄带电力线通信传输的循环移位选择)”;和(iii)以MostafaSayedIbrahim,IlHanKim,TarkeshPande和AnujBatra的名义于2014年9月30日提交的申请号为62 / 057,669的“COLLISIONRATEREDUCTIONTECHNIQUEFORMIMONARROWBANDPOWERLINECOMMUNICATION (Collision Rate Reduction Techniques for MIMO Narrowband Power Line Communications)"; each of which i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B3/54H04B7/04
CPCH04B3/542H04B7/0413H04L27/2602H04L5/0023H04L27/2613H04L27/2663H04L1/188H04L27/2656H04B3/546H04L27/2603H04L27/2655H04B3/54H04L27/26H04W74/0816H04L7/042
Inventor M·S·易卜拉欣II·H·金T·潘德A·巴特拉T·M·斯加米德D·W·沃特世
Owner TEXAS INSTR INC