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Orthogonal transmit diversity (OTD) and space-time spreading (STS) have been included in the 3gpp2 standard, while space-time transmit diversity (STTD) is one part of the 3gpp standard.
包括应用在3gpp 2标准中正交传输分集(otd)和空时扩频(STS),另外空时传书分集作为3gpp传输标准的一部分。
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