略語大辞典 [C] 31 EVM error vector magnitude 誤りベクトル度. ディジタル通信での変調品位評価指数.error vector magnitude; a quality index for digital modulation; e.g. used for characterizing dual-mode NADC(North American Digital Cellular) transmitters, which use DQPSK(π/4-differential quadrature phase shift keying) modul 丸善「略語大辞典」JLogosID : 11874347