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WNW [Wideband Networking Waveform] is a high data rate COFDM [Code (encrypted) Orthogonal Frequency Division Multiplexing] digital waveform developed for JTRS [Joint Tactical Radio System].

The COFDM WNW provides an SIS [Signal-In-Space] (wireless) data transmission rate ranging from 47 Kbps up to 12.1 Mbps. What follows is a review of OFDM [Orthogonal Frequency Division Multiplexing] which is a single-carrier or multiple sub-carrier modulation formats. The data is split into many closely spaced sub-carriers. The use of many different frequencies makes OFDM very reliable even in noisy and multi-path (see Multipath) situations. In addition, OFDM can support higher data rates than single carrier systems. That is, for data rates up to 11 MPBS CCK [Complimentary Code Keying] is acceptable.

OFDM can support data rates up to 54 MBPS or higher. A technical note: 802.11g radios can receive either CCK or OFDM. However, 802.11b uses DSSS [Direct Sequence Spread Spectrum].

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[tags]wnw,wideband networking waveform,cofdm,code (encrypted) orthogonal frequency division multiplexing,cck,complimentary code keying[/tags]