N-GEN Communications Web-based Seminars ©NGCS

Seminar - An Overview of Communications Technologies

Module 9 - Wireless Systems and Technologies                                                                                   Slide 7 of 80                                                                                                    ________________

    Wireless Communications Concepts

                                    Frequency Division Multiple Access (FDMA)

                                    Time Division Multiple Access (TDMA)

                                    Code Division Multiple Access (CDMA)

                                    Cellular Digital Packet Data (CDPD)

                                    Orthogonal Frequency Division Multiplexing (OFDM)

                                    Direct Sequence Spread Spectrum (DSSS)

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FDMA, TDMA, CDMA, CDPD, OFDM and DSSS are the most commonly used techniques to simultaneously transmit two or more signals on a single channel.