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Carrier recovery for sub-millimeterwave wireless transmission
2017 IEEE Radio and Wireless Symposium (RWS), 2017The carrier frequencies of wireless systems are expanded to higher and higher frequency bands where huge bandwidths for data-hungry applications can be realized. One of the prospective regions is the sub-millimeterwave band. Wireless transmission needs coherent local oscillators at the transmitter and receiver for efficient operation.
Niels Neumann +3 more
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Cyclic spectrum based carrier recovery for OQPSK
SPIE Proceedings, 2011A union carrier synchronization scheme of feed-forward frequency offset estimation and PLL for OQPSK signals is discussed in this paper. A feed-forward frequency offset estimator is developed based on the cyclic spectrum of the received signal. In order to suppress channel noise, an improved strategy is proposed.
Hua Peng, Jing Li
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Carrier Frequency Recovery with CPM Modulations
1997Continuous phase modulation (CPM) encompasses a class of signaling schemes that conserve and reduce signal energy and bandwidth at the same time. Furthermore, the signals in this class have a constant envelope and therefore are very attractive in radio channels employing low-cost non-linear power amplifiers.
Umberto Mengali, Aldo N. D’Andrea
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Robust carrier recovery for DVB-S2 system
ICTC 2011, 2011This paper suggests the practical approach to mitigate phase noise by using joint detection and decoding scheme for DVB-S2 system. The proposed scheme illustrates in detail to implement robust DVB-S2 receiver compared to the previous study and shows the satisfactory performance when the specific LDPC decoding schedules have been utilized in the ...
Pansoo Kim, Deock-Gil Oh, Ho-Jin Lee
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Carrier Frequency Recovery with Linear Modulations
1997A frequency recovery system accomplishes two basic functions: (i) it derives an estimate v of the carrier frequency offset; (ii) it compensates for this offset by counter-rotating the received waveform r(t) at an angular speed 2πv. In the ensuing discussion we distinguish between two major cases [1]: (i) the offset is much smaller than 1/T,
Umberto Mengali, Aldo N. D’Andrea
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Hardware Efficient Carrier Recovery Algorithms for Single-Carrier QAM systems
Advanced Photonics Congress, 2012This paper presents an overview on recent advancement of carrier synchronization techniques for optical systems using single-carrier quadrature-amplitude-modulation (QAM), with a special emphasis on a class of newly proposed multi-stage carrier phase recovery ...
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Carrier recovery using FFT and Kalman filter
3rd International Symposium on Image and Signal Processing and Analysis, 2003. ISPA 2003. Proceedings of the, 2004The challenge of carrier recovery for digitally phase modulated, suppressed-carrier signals has been the target of much attention in mobile radio system design for many years. In this paper, a new open-loop all-digital carrier recovery method for multiple phase shift keying (MPSK) which is based on random data modulation is presented.
null Xu Yang +3 more
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Minimum entropy approach for carrier frequency recovery
IEEE Transactions on Wireless Communications, 2006This paper introduces a new carrier frequency recovery approach. It can be applied before modulation classification and/or demodulation of the M-ary PSK signals. It relies on the entropy of the instantaneous phase probability density function, and uses the fact that it reaches minimum when the receiver is fine-tuned to the unknown carrier frequency ...
M. Pedzisz, A. Coatanhay
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Efficient Carrier Recovery for High-Order QAM
2007 Digest of Technical Papers International Conference on Consumer Electronics, 2007A novel carrier recovery algorithm for high-order quadrature amplitude modulation (QAM) is proposed in this paper. Besides the traditional decision-directed phase detector, the algorithm employs an improved polarity-based phase detector to extend the acquisition range of carrier frequency offset. And when combined with a dual-mode adaptive equalization
Liu Zhi +3 more
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Ultimate Single-Carrier Recovery for Coherent Detection
Optical Fiber Communication Conference/National Fiber Optic Engineers Conference 2011, 2011Proposed adaptive decision-feedback CR method is “ultimate” in the sense that it is ML/MMSE optimal (its performance cannot ever be exceeded) while its complexity vs. the number of taps, L, is lowest O(L) order possible.
Netta Sigron +4 more
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