Results 21 to 30 of about 824,618 (117)

Maximum Euclidean distance network coded modulation for asymmetric decode-and-forward two-way relaying

, 2013
Network coding (NC) compresses two traffic flows with the aid of low-complexity algebraic operations, hence holds the potential of significantly improving both the efficiency of wireless two-way relaying, where each receiver is collocated with a ...
Chen, Wei, Hanzo, Lajos, Cao, Zhigang
core   +1 more source

Tuning of human modulation filters is carrier-frequency dependent [PDF]

, 2013
Recent studies employing speech stimuli to investigate 'cocktail-party' listening have focused on entrainment of cortical activity to modulations at syllabic (5 Hz) and phonemic (20 Hz) rates.
Reiss Joshua D., Reiss, JD, Simpson, AJ, Andrew J R Simpson, Simpson Andrew J. R., Joshua D. Reiss, Simpson, AJR, McAlpine, D, Joshua D Reiss, David McAlpine, Andrew J. R. Simpson, McAlpine David   +11 more
core   +1 more source

Iterative amplitude/phase multiple-symbol differential sphere detection for DAPSK modulated transmissions

, 2012
Differentially encoded and non-coherently detected transceivers exhibit a low complexity, since they dispense with complex channel estimation. Albeit this is achieved at the cost of requiring an increased transmit power, they are particularly beneficial,
Hari, K.V.S., Wang, Li, Li Wang, K.V.S. Hari, Hanzo, Lajos, Lajos Hanzo   +5 more
core   +1 more source

Modulator-free quadrature amplitude modulation signal synthesis

, 2014
The ability to generate high-speed on-off-keyed telecommunication signals by directly modulating a semiconductor laser’s drive current was one of the most exciting prospective applications of the nascent field of laser technology throughout the 1960s ...
Kelly, Brian, O’Carroll, John, Slavík, Radan, Phelan, Richard, Richardson, David J., Liu, Zhixin, Kakande, Joseph   +6 more
core   +1 more source

Adaptive minimum symbol error rate beamforming assisted receiver for quadrature amplitude modulation systems

, 2006
An adaptive beamforming assisted receiver is proposed for multiple antenna aided multiuser systems that employ bandwidth efficient quadrature amplitude modulation (QAM).
Du, H.Q, Hanzo, L., Chen, S.
core  

On the Design of Turbo Trellis Coded Modulation schemes using Symbol-based EXIT Charts [PDF]

, 2006
In this paper we design bandwidth efficient parallel-concatenated Turbo Trellis Coded Modulation (TTCM) schemes for communicating over AWGN and uncorrelated Rayleigh fading channels.
Kliewer, J., Alamri, O., Ng, S. X., S. Ng, J. Kliewer, O. Alamri, L. Hanzo, Hanzo, L.   +7 more
core   +1 more source

Optimum Mode-Switching Assisted Adaptive Modulation

, 2001
Adaptive modulation techniques combat fading by employing a suitable modulation mode depending on the instantaneous channel conditions for improving the Bit Error Rate (BER) performance or the average through-put.
Choi, B.J., Hanzo, L.
core  

Intensity dependent residual amplitude modulation in electro-optic phase modulators

, 2012
Residual amplitude modulation (RAM) mechanisms in electro-optic phase modulators are detrimental in applications that require high purity phase modulation of the incident laser beam.
Jaatinen, Esa, Sathian, Juna
core   +1 more source

Optimum Mode-Switching-Assisted Constant-Power Single- and Multicarrier Adaptive Modulation

, 2003
A set of optimum mode-switching levels is derived for a generic constant-power adaptive-modulation scheme based on a closed-form expression of the average bit error ratio (BER) and the average bits-per-symbol (BPS) throughput of the adaptive-modulation ...
Choi, B.J., Hanzo, L.
core  

Wideband Burst-by-Burst Adaptive Modulation Using Reduced-Complexity In-Phase/Quadrature-Phase Turbo Equalization

, 2002
The performance of burst-by-burst adaptive modulation is studied in conjunction with reduced complexity turbo equalization over a wideband multi-path Rayleigh fading channel.
Wong, C H, Yeap, B L, Hanzo, L
core