Patent
Cyclic prefix based opportunistic transmission/reception scheme for interference cancelation
Rafael C. D. Paiva,Andre Mendes Cavalcante,Robson Domingos,Fabiano Chaves,Fuad Junior,Angilberto M. Sobrinho,Erika Portela Lopes de Almeida +6 more
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TLDR
In this article, a signal structure is constructed to match a structure of an interfering signal with a repetitive time structure, which is then used to cancel the interference caused by the interfering signal.Abstract:
Systems, methods, apparatuses, and computer program products for interference cancellation are provided. One method includes forming, by a wireless system, a signal structure to match a structure of an interfering signal with repetitive time structure. The method may further include using the formed signal structure to eliminate interference caused by the interfering signal. The signal structure includes parts that are synchronized with the repeated parts of the interfering signal structure to cancel the repetition of the interference, and the signal structure further comprises another part synchronized with the non-repeated parts of the interference signal.read more
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References
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Journal ArticleDOI
Interference cancellation for cellular systems: a contemporary overview
TL;DR: How current and future trends increases the need for and viability of multi-user receivers for both the uplink, where many asynchronous users are simultaneously detected, and the downlink, where users are scheduled and largely orthogonalized is discussed.
Journal ArticleDOI
OFDM for cognitive radio: merits and challenges
TL;DR: The orthogonal frequency division multiplexing technique is investigated as a candidate transmission technology for CR systems and their requirement of a physical layer are discussed, and the cognitive properties of some OFDM-based wireless standards are discussed to indicate the trend toward a more cognitive radio.
Patent
Timing and frequency synchronization of OFDM signals
Timothy M. Schmidl,Donald C. Cox +1 more
TL;DR: In this paper, the authors used two OFDM training symbols to obtain full synchronization in less than two data frames using a timing metric which recognizes the half-symbol symmetry of the first OPDM training symbol.
Proceedings ArticleDOI
Performance Evaluation of LTE and Wi-Fi Coexistence in Unlicensed Bands
Andre Mendes Cavalcante,Erika Portela Lopes de Almeida,Robson D. Vieira,Fabiano Chaves,Rafael C. D. Paiva,Fuad Mousse Abinader,Sayantan Choudhury,Esa Tuomaala,Klaus Doppler +8 more
TL;DR: A simulator-based system- level analysis in order to assess the network performance in an office scenario shows that LTE system performance is slightly affected by coexistence whereas Wi-Fi is significantly impacted by LTE transmissions.
Book
Next Generation Wireless LANs: Throughput, Robustness, and Reliability in 802.11n
Eldad Perahia,Robert J. Stacey +1 more
TL;DR: In this article, a comprehensive overview of IEEE 802.11n key throughput, robustness, and reliability enhancing features (such as MIMO, 40 MHz channels, and packet aggregation) is given, in addition to a clear summary of the issues surrounding legacy interoperability and coexistence.