ECCM (electronic counter- Dicke, R. H., 43 countermeasure), 511 Dicke (switched) receiver, 1075 ECM (electronic countermeasure), 511 Difference set, 315-317 ECM/ECCM game theoretical Differential phase encoding, 715, 732 considerations, 511 Differentially coherent detection, 715 Effective jammer, 672 Differentially phase-encoded quadrature Effective jamming noise power spectral amplitude-shift-keyed signals density, 471 (DQASK), 731 EG (see Energy gain) Digital European cordless telephone Ehrich, W. G., 114 (DECT), 1183, 1188, 1193-1194 Einarsson, G., 1140 Digital spectrum analyzer, 1080 Eisenstadt, B. M., 90 Direct-sequence (DS) modulation, 12, 1161 El-Ghouroury, H. S., 987 direct-sequence pseudonoise modulation, El-Wailly, F., 454, 457, 458 Electronic counter-countermeasure direct-sequence spread spectrum (ECCM), 511 receiver, 753 Electronic countermeasure (ECM), 511 versus frequency hopping, 1162-1165 Electronic warfare (EW), 586 in high-density networks, 1176-1182 Energy allocation strategies, 6-8 (See also DS/PSK modulation) Energy detector, 1033, 1038-1040 Discrete Fourier transform, 989, 992, 993, Energy gain (EG), 7 1001, 1011 calculations, 17-20 Discrete time correlation, 818, 822 DS/PSK modulation, 17 Discriminator characteristic, 904, 907, 908 hybrid modulation, 19 Dither frequency, 916, 917, 927 independent FH modulation, 18 DiToro, M. J., 80 Energy per bit-to-jammer noise ratio, 246 Diversity, 6, 8, 93, 179, 183, 227, 231, Envelope detector, 732 235-238, 249, 439, 444, 497, 602-626, Equiexpanding window search, 856 971,9 978, 1001, 1006, 1022, 1165-1166, Equitorial, 1159 1198-1208 Equivalent AWGN interference, 695 Diversity chips (FH/MFSK subsymbols), Equivalent AWGN jammer, 697 Erasure, 190, 260 Dixon, R. C., 109, 121, 469, 471 Erasure symbol, 1125 DLL (see Delay-locked loop) Error-correction coding in SS systems, Doelz, M. L., 92 historical notes, 76, 92 Doppler-spread, 446 European digital cellular standard (GSM), Double dither loop (DDL), 903, 935-940 1170, 1172-1173, 1183 DQASK (differentially p