Spectrally Efficient Multi-Carrier Modulation Using Gabor Transform

• 作者: Akash S. Shetty K. A. Narayanankutty Naveenkumar Vijayakumar P. Aditya Kumar Shravan Sriram V. P. Prasshanth
• 来源期刊: 无线工程与技术(英文)
• 学科: 工学
• 关键词: Non-Orthogonal FREQUENCY DIVISION MULTIPLEXING (NOFDM) Spectrally EFFICIENT FREQUENCY DIVISION MULTIPLEXING (SEFDM) GABOR Transform OFDM Reisz BASES Multi Carrier Modulation (MCM)
• 年，卷（期）: 2013,（2）
• 页码范围: 112-116
• 页数: 5页
• 分类号: TN91

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.