At last we use the same concept to construct a multilevel trellis coded modulation and space time coded modulation for noncoherent decoding based on QPSK and it can have a good error performance too.是什么意思_At last we use the same concept to construct a multilevel trellis coded modulation and space time coded modulation for noncoherent decoding based on QPSK and it can have a good error performance too.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句