(1) See preshared keys.
(2) (Phase Shift Keying) A simple digital modulation technique that uses two different phase angles for 0 and 1. Quadrature PSK (QPSK) uses four phase shifts for each two bits of input. See phase modulation and DPSK.
Phase Shift Keying
PSK is a simple technique that uses two phases to represent 0 and 1.
Quadrature PSK
QPSK uses four phases 90 degrees apart to represent four values in each two bits (0-4) of input.
(2) (Phase Shift Keying) A simple digital modulation technique that uses two different phase angles for 0 and 1. Quadrature PSK (QPSK) uses four phase shifts for each two bits of input. See phase modulation and DPSK.
Phase Shift Keying
PSK is a simple technique that uses two phases to represent 0 and 1.
Quadrature PSK
QPSK uses four phases 90 degrees apart to represent four values in each two bits (0-4) of input.
 | Reproduced with permission from Computer Desktop Encyclopedia. Copyright (c) 1981-2008 The Computer Language Company Inc. All rights reserved. |
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