IEEE Transactions on Communications
Công bố khoa học tiêu biểu
* Dữ liệu chỉ mang tính chất tham khảo
Sắp xếp:
High-speed power-efficient indoor wireless infrared communication using code combining .I
IEEE Transactions on Communications - Tập 50 Số 7 - Trang 1098-1109 - 2002
While use of power-efficient signaling schemes appears to be effective at compensating for the inherent high path-loss associated with pure diffuse infrared links, it begins to lose its effectiveness as the data rate is increased. At very high data rates, intersymbol interference (ISI) can result in a very high and sometimes irreducible power penalty, preventing the system from operating at a low ......
#Wireless communication #Optical fiber communication #Intersymbol interference #Pulse modulation #Transmitters #Diversity reception #Signal design #Reed-Solomon codes #Modulation coding #Dynamic range
Performance of dual-diversity predetection EGC in correlated Rayleigh fading with unequal branch SNRs
IEEE Transactions on Communications - Tập 50 Số 7 - Trang 1041-1044 - 2002
The bit error probability (BEP) for coherent detection of binary signals with dual-diversity predetection equal gain combining is derived using the Beaulieu (1991) series. In particular, we consider a correlated Rayleigh fading channel with unequal branch signal-to-noise ratios. The BEP expression is in terms of the power correlation coefficient of the branches, is easy to compute, and depicts cle......
#Electrocardiography #Rayleigh channels #Diversity reception #Diversity methods #Error probability #Signal detection #Fading #Random variables #Signal to noise ratio #Wireless communication
Adaptive coded modulation for fading channels
IEEE Transactions on Communications - Tập 46 Số 5 - Trang 595-602 - 1998
Free-space optical communication through atmospheric turbulence channels
IEEE Transactions on Communications - Tập 50 Số 8 - Trang 1293-1300 - 2002
In free-space optical communication links, atmospheric turbulence causes fluctuations in both the intensity and the phase of the received light signal, impairing link performance. We describe several communication techniques to mitigate turbulence-induced intensity fluctuations, i.e., signal fading. These techniques are applicable in the regime in which the receiver aperture is smaller than the co......
#Optical fiber communication #Fading #Fluctuations #Statistics #Diversity reception #Optical receivers #Apertures #Detectors #Maximum likelihood detection #Costs
Channel estimation for multicarrier modulation systems using a time-frequency polynomial model
IEEE Transactions on Communications - Tập 50 Số 7 - Trang 1045-1048 - 2002
Channel estimation is a crucial aspect in the design of multicarrier modulation systems. We propose a channel estimation scheme based on polynomial approximation of the channel responses in both the time and frequency domains. The proposed estimator is more robust to the variations of channel statistics. Our simulation shows that it has more than a 5-dB improvement over the existing methods under ......
#Channel estimation #Time frequency analysis #Polynomials #Frequency domain analysis #Statistics #Bandwidth #Intersymbol interference #Transmitters #Design optimization #Estimation error
Adaptive detector arrays for optical communications receivers
IEEE Transactions on Communications - Tập 50 Số 7 - Trang 1091-1097 - 2002
An optimal adaptive array receiver for use in groundbased optical communications is investigated. Kolmogorov phase screen simulations are used to generate realistic focal-plane distributions of the received optical fields in the presence of turbulence. The array detection concept reduces interference from background radiation by effectively assigning higher confidence levels at each instant of tim......
#Optical arrays #Optical receivers #Optical detectors #Adaptive arrays #Sensor arrays #Adaptive optics #Apertures #Telescopes #Optical filters #Radiation detectors
Sequence detection in nonlinear channels: a convenient alternative to analog predistortion
IEEE Transactions on Communications - Tập 50 Số 9 - Trang 1515-1524 - 2002
A new maximum-likelihood sequence detection receiver for spectrally efficient linear modulations on bandlimited bandpass nonlinear channels is proposed. The receiver is based on oversampling the received signal corrupted by noise and nonlinear distortion. Contrary to other solutions in the literature, in the proposed technique there is no need for a bank of matched filters, and the receiver front ......
#Predistortion #Optical amplifiers #Maximum likelihood detection #Power amplifiers #Receivers #Nonlinear distortion #Matched filters #Radiofrequency amplifiers #Radio frequency #Satellite broadcasting
A new approach to greedy multiuser detection
IEEE Transactions on Communications - Tập 50 Số 8 - Trang 1326-1336 - 2002
We propose a new suboptimum multiuser detector for synchronous and asynchronous multiuser communications. In this approach, a greedy strategy is used to maximize the cost function, the maximum-likelihood (ML) metric. The coefficients of the ML metric are utilized as weights indicating in which order bits can be estimated. The complexity of the algorithm is approximately K/sup 2/ log K per bit, whe......
#Multiuser detection #Detectors #Maximum likelihood estimation #Fading #Cost function #Maximum likelihood detection #Performance analysis #Additive white noise #Frequency #Interference cancellation
Resource allocation in an OFDM-based cognitive radio system
IEEE Transactions on Communications - Tập 57 Số 7 - Trang 1928-1931 - 2009
Sum-Rate and Power Scaling of Massive MIMO Systems With Channel Aging
IEEE Transactions on Communications - Tập 63 Số 12 - Trang 4879-4893 - 2015
Tổng số: 127
- 1
- 2
- 3
- 4
- 5
- 6
- 10