Selection of training sequences for Multiple-In Multiple-Out transmissions

摘要

A cellular communication system comprises a Multiple-In Multiple-Out, MIMO, transmitter and receiver. The MIMO transmitter comprises a message generator for generating MIMO messages comprising selected training sequences and transceivers transmitting the messages on a plurality of antennas. The training sequences are selected by a midamble selector from a set of training sequences in response to an associated antenna on which the message is to be transmitted. The set of training sequences is associated with the cell of the MIMO transmitter and comprises disjoint subsets of training sequences for each of the plurality of antennas. The receiver comprises a transmit antenna detector which determines which antenna of the MIMO transmitter the message is transmitted from in response to the training sequence of the received message.

主权项

1. An electronic device connectable to a plurality of antennas, the electronic device comprising:
processing circuitry configured to: receive a message from a Multiple-In Multiple-Out (MIMO) transmitter, the received message including a training sequence from a set of a plurality of training sequences, the training sequence being uniquely linked to an identity of a cell served by the MIMO transmitter, the set of training sequences including sets with no overlapped training sequences, and each of the no overlapped sets of training sequences being associated with a corresponding one of a plurality of antennas of the MIMO transmitter; and determine an antenna of the plurality of antennas of the MIMO transmitter from which the message is transmitted in response to at least one of: the training sequence, and information about the no overlapped sets of training sequences, wherein the no overlapped sets of training sequences are associated with a first antenna of the plurality of antennas of the MIMO transmitter and are orthogonal with respect to a set of training sequences associated with a second antenna of the plurality of antennas of the MIMO transmitter, and wherein the message is a message transmitted from the first antenna of the plurality of antennas of the MIMO transmitter and is transmitted at a same time as another said message transmitted from the second antenna of the plurality of antennas of the MIMO transmitter.