Spectrally Efficient Multi-Carrier Modulation Using Gabor Transform

作     者：Shravan Sriram Naveenkumar Vijayakumar P. Aditya Kumar Akash S. Shetty V. P. Prasshanth K. A. Narayanankutty 

作者机构：Department of Electronics and Communication Engineering Amrita School of Engineering Amrita Vishwa Vidyapeetham University Coimbatore India 

出 版 物：《Wireless Engineering and Technology》 (无线工程与技术（英文）)

年 卷 期：2013年第4卷第2期

页      面：112-116页

学科分类：0810[工学-信息与通信工程] 08[工学] 081001[工学-通信与信息系统] 

主　　题：Non-Orthogonal Frequency Division Multiplexing (NOFDM) Spectrally Efficient Frequency Division Multiplexing (SEFDM) Gabor Transform OFDM Reisz Bases Multi Carrier Modulation (MCM) 

摘      要：Non Orthogonal Frequency Division Multiplexing (NOFDM) systems make use of a transmission signal set which is not restricted to orthonormal bases unlike previous OFDM systems. The usage of non-orthogonal bases generally results in a trade-off between Bit Error Rate (BER) and receiver complexity. This paper studies the use of Gabor based on designing a Spectrally Efficient Multi-Carrier Modulation Scheme. Using Gabor Transform with a specific Gaussian envelope;we derive the expected BER-SNR performance. The spectral usage of such a NOFDM system when affected by a channel that imparts Additive White Gaussian Noise (AWGN) is estimated. We compare the obtained results with an OFDM system and observe that with comparable BER performance, this system gives a better spectral usage. The effect of window length on spectral usage is also analyzed.