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A Sub-band based Ultra WideBand (SUWB) system is proposed. The technique provides scope for using the ultra wideband bandwidth efficiently by exploiting the available link margin for short range communications. The bandwidth of 500 MHz or more is divided into a fixed number of subbands. The data transmission scheme over multiple sub-bands can be designed to achieve higher data rate, higher reliability or support multi-user access. The SUWB system facilitates low power implementations by reducing the sampling rate requirements and also by the use of an orthogonal spreading code based interference rejection and multi-path cancellation receiver.
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