Results 231 to 240 of about 4,446,627 (280)
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A technique for orthogonal frequency division multiplexing frequency offset correction
IEEE Transactions on Communications, 1994This paper discusses the effects of frequency offset on the performance of orthogonal frequency division multiplexing (OFDM) digital communications. The main problem with frequency offset is that it introduces interference among the multiplicity of carriers in the OFDM signal.
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The History of Orthogonal Frequency Division Multiplexing
IEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference, 2008This paper depicts the development of Orthogonal Frequency Division Multiplexing from a historical perspective. A summary of major research milestones are noted that contributed to modern-day OFDM. These contributions include the use of discrete Fourier transforms replacing the analog implementation and addition of cyclic extensions to ensure ...
Nickolas J. LaSorte +2 more
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Multi rate orthogonal frequency division multiplexing
IEEE International Conference on Communications, 2005. ICC 2005. 2005, 2005A novel multi rate orthogonal frequency division multiplexing (OFDM) system is proposed in this paper. It is expected to provide a flexible physical layer support to next generation wireless networks. It is mainly suited to inter carrier interference limited situations, when a large number of sub carriers are used within the available bandwidth ...
Das, Suvra Sekhar +2 more
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Orthogonal Frequency Division Multiplexing With Subcarrier Gap Modulation
2020 IEEE 31st Annual International Symposium on Personal, Indoor and Mobile Radio Communications, 2020A new modulation scheme called orthogonal frequency division multiplexing with subcarrier gap modulation (OFDM-SGM) is proposed. The proposed scheme embeds extra information bits by exploiting the gap between the active subcarriers in each subblock.
Ahmad M. Jaradat +2 more
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Orthogonal Frequency Division Multiplexing (OFDM)
2008 China-Japan Joint Microwave Conference, 2008In broadband wireless system, the signal energy is scattered and reflected from objects in the environment, components of the signal arriving at the receiver are spread out over a longer period of time than is desirable. The challenge is then to provide a high-performance reliable data link that can operate with the restricted receiver power levels ...
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Orthogonal Frequency Division Multiplexing with Codebook Index Modulation
2020 28th Signal Processing and Communications Applications Conference (SIU), 2020Ultra-reliable and low-latency communications (URLLC) partake a major role in future communication systems. A possible strong candidate for future URLLC networks is sparse vector coding (SVC), which enables a superior performance in terms of bit error rate (BER).
Emre Arslan +2 more
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Performance Evaluation Of The Frequency Detectors For Orthogonal Frequency Division Multiplexing
International Conference on Consumer Electronics, 1997This paper deals with the performance evaluation of a total of six frequency synchronization algorithms (five known algorithms and one new algorithm proposed in this paper called the "guard-band power detection algorithm") for OFDM systems in the channel with AWGN and multipath.
null Dong-Kyu Kim +3 more
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Differential Spatial Frequency Modulation with Orthogonal Frequency Division Multiplexing
2018 IEEE Global Communications Conference (GLOBECOM), 2018Spatial modulation orthogonal frequency division multiplexing with subcarrier index modulation (ISM-OFDM) is a novel OFDM technique that conveys additional information bits by active antenna indices and grouped subcarrier indices. However, it takes a huge amount of resources to acquire the channel state information (CSI) at the receiver. In this paper,
Yajun Fan +5 more
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A Survey: Orthogonal Frequency Division Multiplexing
2014This paper is a survey regarding the orthogonal frequency division multiplexing. The requirement for high speed data transmission has increased, with the rapid growth of digital communication in recent years. UWB delivers much potential for design of high speed wireless communication system.
Haigune, Miss. Priyanka +2 more
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Orthogonal Frequency and Mode Division Multiplexing for Wireless Communications
2018 IEEE Global Communications Conference (GLOBECOM), 2018Orbital angular momentum (OAM) based radio vortex wireless communications have the potential to significantly increase the spectrum efficiency (SE) without increasing extra time and frequency resources. In this paper, we propose a hybrid orthogonal division multiplexing (HODM) scheme, which jointly uses the orthogonal mode division multiplexing and the
Liping Liang +3 more
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