Multiple-input multiple-output system and method

Details Multiple-input multiple-output system and method Multiple-input multiple-output system and method

H - Electricity

04

L

H04L 27/00 (2006.01) H04J 3/00 (2006.01) H04L 1/00 (2006.01) H04L 12/56 (2006.01)

Patent

CA 2544850

A multiple-input multiple-output (MIMO) system can transmit on multiple antennas simultaneously and receive on multiple antennas simultaneously. Unfortunately, because a legacy 802.11a/g device is not able to decode multiple data streams, such a legacy device may "stomp" on a MIMO packet by transmitting before the transmission of the MIMO packet is complete. Therefore, MIMO systems and methods are provided herein to allow legacy devices to decode the length of a MIMO packet and to restrain from transmitting during that period. These MIMO systems and methods are optimized for efficient transmission of MIMO packets.

L'invention concerne un système entrée multiple sortie multiple (MIMO) permettant une transmission simultanée sur des antennes multiples et une réception simultanée sur des antennes multiples. Malheureusement, puisqu'un dispositif 802.11a/g actuel n'est pas capable de décoder des flux de données multiples, un tel dispositif actuel peut s'imposer sur un paquet MIMO en faisant passer sa transmission avant que la transmission du paquet MIMO ne soit achevée. Aussi les systèmes et procédés MIMO selon l'invention permettent aux dispositifs légaux de décoder la longueur d'un paquet MIMO et de suspendre leur transmission pendant cette période. Ces systèmes et procédés MIMO sont optimisés pour une transmission efficace de paquets MIMO.

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