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Receiving method and device of MIMO (multiple-input multiple-output) communication system compatible to multiple frame formats

A technology of communication system and receiving method, applied in the direction of transmission system, digital transmission system, modulated carrier system, etc.

Active Publication Date: 2015-02-18
南京易太可通信技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The IEEE 802.11ad standard uses a directional antenna to send data and can only support one data stream

Method used

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  • Receiving method and device of MIMO (multiple-input multiple-output) communication system compatible to multiple frame formats
  • Receiving method and device of MIMO (multiple-input multiple-output) communication system compatible to multiple frame formats
  • Receiving method and device of MIMO (multiple-input multiple-output) communication system compatible to multiple frame formats

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0079] Example 1: Receiving an SC MIMO PPDU

[0080] (A1) A station operating under a certain basic service set, when not accessing a channel, puts the radio frequency link in a receiving state, repeats frame detection until the arrival of a frame is detected, and enters step (A2);

[0081] (A2) The receiver uses the preamble to complete carrier frequency synchronization, time synchronization and SC MIMO time domain channel coefficient estimation;

[0082] (A3) After receiving and processing SIG-A based on the time-domain channel coefficient obtained in step (A2), the specific structure of SIG-A is shown in figure 2 , do cyclic redundancy check to SIG-A, if check fails, then return to step (A1), if check is successful, then enter step (A4);

[0083] (A4) Analyze the information of each subfield in SIG-A. Since in this example, the received PPDU is a SC MIMO PPDU, the value of the SC / OFDM subfield in SIG-A is 0. Calculate and demodulate the PPDU The relevant parameters of th...

example 2

[0095] Example 2: Receiving an OFDM MIMO PPDU

[0096] (B1) A station operating under a certain basic service set, when not accessing the channel, puts the radio frequency link in the receiving state, repeats the frame detection until the arrival of a frame is detected, and enters step (B2);

[0097] (B2) The receiver uses the preamble to complete carrier frequency synchronization, time synchronization and SC MIMO time domain channel coefficient estimation;

[0098] (B3) After receiving and processing SIG-A based on the time-domain channel coefficient obtained in step (B2), perform a cyclic redundancy check on SIG-A, if the check fails, then return to step (B1), if the check is successful, Then enter step (B4);

[0099] (B4) Analyze the information of each subfield in the SIG-A, calculate the relevant parameters required for demodulation of the PPDU, and the number of OFDM symbols N in the data field sym The calculation process is as follows:

[0100] Known by the parameter...

example 3

[0108] Example 3: Receiving an OFDM MU-MIMO PPDU

[0109] (C1) A station operating under a certain basic service set, when not accessing a channel, puts the radio frequency link in a receiving state, repeats frame detection until the arrival of a frame is detected, and enters step (C2);

[0110] (C2) The receiver uses the preamble to complete carrier frequency synchronization, time synchronization and SC MIMO time domain channel coefficient estimation;

[0111] (C3) After receiving and processing SIG-A based on the time-domain channel coefficient obtained in step (C2), perform cyclic redundancy check on SIG-A, if the check fails, then return to step (C1), if the check is successful, Then enter step (C4);

[0112] (C4) Analyze the information of each subfield in SIG-A. In this example, the subfield SC / OFDM of SIG-A=1 and the subfield GroupID is assigned a value between 1 and 62. According to the SIG-A The value of the subfield GroupID of the subfield determines that this site...

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Abstract

The invention discloses a receiving method and device of an MIMO (multiple-input multiple-output) communication system compatible to multiple frame formats and belongs to the technical field of wireless communication. In a millimeter-wave wireless communication system, stations working in the same basic service set are likely to receive three different types of PPDUs (physical layer protocol data units), namely a single-carrier MIMO PPDU, an OFDM (orthogonal frequency division multiplexing) MIMO PPDU and an OFDM MU-MIMO (multi-user multiple-input multiple-output) PPDU. Preambles of the three frame formats are identical to signaling fields A in format and sent in a single-carrier mode. The receiving method includes that a receiver demodulates the signaling fields A with the single-carrier mode, a receiving process is configured on the basis of the signaling fields A and signaling fields B, and the various PPDUs are demodulated. Compared with the prior art, the receiving method and device have the advantage that reliability and compatibility of the system are improved effectively.

Description

technical field [0001] The invention relates to a receiving signal processing method and device applied to a multiple-input multiple-output (MIMO: Multiple-Input Multiple-Output) hybrid carrier mechanism communication system of a wireless local area network, which can process multiple physical layer protocol data units (PPDU: Physical Layer Protocol Data Unit), the receiver configures the receiving process based on the signaling field A and the signaling field B, which effectively improves the reliability and compatibility of the system, and belongs to the technical field of wireless communication. Background technique [0002] Due to the increasing shortage of wireless spectrum resources, millimeter wave communication technology has attracted widespread attention and has become one of the most promising communication technologies. The high-throughput millimeter wave communication technology has become one of the most active fields of wireless communication technology. In t...

Claims

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Application Information

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IPC IPC(8): H04L27/00H04L25/02H04L1/00
Inventor 何世文吴波王海明黄永明张军洪伟江华
Owner 南京易太可通信技术有限公司
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