An orthogonal frequency division (OFDM) multiplexing
technique that uses an arbitrary deterministic sequence as the
guard interval rather than the random cyclic prefixes used in
cyclic prefix OFDM (CP-OFDM). UW-OFDM provides the same
benefits as CP — including protecting the OFDM signals from
intersymbol interference (ISI). CP-OFDM offers benefits for
synchronization and channel estimation purposes since it uses
known sequences.