Direct vs. Two-Step Approach for Unique Word Generation in UW-OFDM

Details Direct vs. Two-Step Approach for Unique Word Generation in UW-OFDM Direct vs. Two-Step Approach for Unique Word Generation in UW-OFDM

2010-09-17

arxiv.org/abs/1009.3354v1

Proceedings of the 15th International OFDM Workshop, Hamburg, 2010

Computer Science

Information Theory

Scientific paper

Unique word OFDM is a novel technique for constructing OFDM symbols, that has many advantages over cyclic prefix OFDM. In this paper we investigate two different approaches for the generation of an OFDM symbol containing a unique word in its time domain representation. The two-step and the direct approach seem very similar at first sight, but actually produce completely different OFDM symbols. Also the overall system's bit error ratio differs significantly for the two approaches. We will prove these propositions analytically, and we will give simulation results for further illustration.

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