Pilot signal transmission method for multiple transmitting antenna system based on orthogonal frequency division multiplexing
A technology for transmitting antennas and pilot signals, applied in diversity/multi-antenna systems, using signal quality detectors for error detection/prevention, transmission systems, etc., can solve problems such as complex scheduling and unbalanced signals of multiple transmitting antennas, and achieve Taking into account pilot overhead and system performance, solving the effects of signal imbalance and complex scheduling
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no. 1 example
[0042] This embodiment proposes a pilot signal sending method for an N (N>=2) transmitting antenna system, which is applicable to a situation where overheads of pilot signals sent by different transmitting antennas are different. Without loss of generality, the N transmit antennas are antenna 1, antenna 2... and antenna N respectively. Each transmit antenna transmits a pilot signal according to a known pilot pattern, and each pilot pattern corresponds to an overhead. There are M kinds of pilot patterns with different overheads (N / M is usually an integer). The pilot transmission method proposed by the present invention can be described as:
[0043] According to the overhead of pilot patterns, divide N pilot patterns into M pilot pattern groups, each pilot pattern group includes N / M pilot patterns, and the overhead of these pilot patterns is the same; correspondingly, divide N There are M groups of transmitting antennas, and each group includes N / M transmitting antennas.
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no. 2 example
[0061] Referring to the description of the first embodiment above, the second embodiment of the present invention is provided below.
[0062] The second embodiment of the present invention provides an enhanced method for transmitting pilot signals of a multi-transmission antenna system. The number of antennas in the multi-transmission antenna system is N, and N pilot patterns are used, and each pilot pattern corresponds to a Kinds of overheads, the overheads of M kinds of pilot patterns are different from each other, the method includes the following steps:
[0063] According to the overhead of the pilot pattern, the N pilot patterns are divided into M pilot pattern groups, and each pilot pattern group includes N / M pilot patterns with the same overhead; correspondingly, the N transmit antennas are divided into M groups, each group includes N / M transmit antennas;
[0064] At the initial moment, the transmitter assigns a pilot pattern group to each group of transmitting antenna...
no. 3 example
[0072] Referring to the first and second embodiments above, the third embodiment of the present invention is provided below.
[0073] The third embodiment of the present invention provides an enhanced method for transmitting pilot signals of a multi-transmission antenna system. The number of antennas in the multi-transmission antenna system is N, and N pilot patterns are used, and each pilot pattern corresponds to a Overhead, the overhead of a total of M pilot patterns is different from each other, and the method includes the following steps:
[0074] According to the overhead of the pilot pattern, the N pilot patterns are divided into M pilot pattern groups, and each pilot pattern group includes N / M pilot patterns with the same overhead; correspondingly, the N transmit antennas are divided into M groups, each group includes N / M transmit antennas;
[0075] At the initial moment, the transmitter selects at least one transmitting antenna group from the M transmitting antenna gr...
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