Abstract:
The proposal of Spectrally Efficient Frequency Division Multiplexing (SEFDM) system has added a new dimension for enhancing spectral utilization. SEFDM systems defy the o...Show MoreMetadata
Abstract:
The proposal of Spectrally Efficient Frequency Division Multiplexing (SEFDM) system has added a new dimension for enhancing spectral utilization. SEFDM systems defy the orthogonality principle defined for Orthogonal Frequency Division Multiplexing (OFDM) systems by employing closely packed overlapped subcarriers to save bandwidth. Nevertheless, the loss of orthogonality results in intercarrier interference (ICI) which impede signal extraction. In this paper, the ICI in the SEFDM system is characterized through mathematical derivations and computer modeling and is shown to rely mainly on the main system parameters in terms of the level of bandwidth savings and number of subcarriers. Closed form formulas for the ICI for the continuous time and discrete time SEFDM system are derived which can be used in designing mitigation techniques, in particular, the design of informed detection algorithms.
Published in: 2012 8th International Symposium on Communication Systems, Networks & Digital Signal Processing (CSNDSP)
Date of Conference: 18-20 July 2012
Date Added to IEEE Xplore: 17 September 2012
ISBN Information: