Results 11 to 20 of about 92,069 (306)
Capacity Versus Bit Error Rate Trade-Off in the DVB-S2 Forward Link
The paper presents an approach to optimize the use of satellite capacity in DVB-S2 forward links. By reducing the so-called safety margins, in the adaptive coding and modulation technique, it is possible to increase the spectral efficiency at expenses of
Matteo Berioli +2 more
doaj +2 more sources
Bit Error Rate for NOMA Network
This letter examines the bit error rate (BER) performance of downlink non-orthogonal multiple access networks for binary phase-shift keying modulation. Exact BER expression is derived for each user in closed-form under additive white Gaussian noise and Rayleigh fading channels in perfect and imperfect successive interference cancellation (SIC) cases ...
Mahmoud Aldababsa +3 more
openaire +3 more sources
Comparison of Bit Error Rate of Line Codes in NG-PON2
This article focuses on simulation and comparison of line codes NRZ (Non Return to Zero), RZ (Return to Zero) and Miller’s code for NG-PON2 (Next-Generation Passive Optical Network Stage 2) using.
Tomas Horvath +4 more
doaj +1 more source
Bit Error Rate pada Sistem MIMO MC-CDMA dengan Teknik Alamouti-STBC
Pada makalah ini dilaporkan hasil penelitian sistem MIMO MC-CDMA dengan teknik Alamouti Space Time Block Code (STBC) menggunakan dua antena pengirim dan dua antena penerima. Kinerja sistem diukur dengan nilai Bit Error Rate (BER).
Sekar Harlen +2 more
doaj +1 more source
Increasing of bit error rate performance for OFDM systems over fading channels
A method for increasing performance of OFDM systems in multipath channels is proposed. The proposed method uses Kalman filter based channel estimator with block type pilot structure.
Larisa I. Averina, Alexandr Yu. Lafickiy
doaj +1 more source
Bit error rate performance of underwater optical wireless communication with hybrid modulation
Turbulence effects can cause performance degradation for underwater optical wireless communication (UOWC) system. In this paper, a hybrid modulation (modulation–modulation, M–M) is presented to resist turbulence‐induced fading and improve the ...
Qiong Luo +3 more
doaj +1 more source
Genetic algorithm assisted minimum bit error rate beamforming [PDF]
A novel genetic algorithm (GA) assisted minimum bit error rate (MBER) beamforming technique is introduced. The performance of the proposed GAs is characterised by the probability density function (PDF) and the mean value of the achievable bit error rate (BER) at the beamformer's output. The results are also compared to the theoretical bounds.
Wolfgang, A. +3 more
openaire +2 more sources
Bit-Error-Rate Analysis of Raptor Codes over Rician Fading Channels
The bit-error-rate expressions of nonsystematic Raptor (NR) codes and systematic Raptor (SR) codes over Rician fading channels are first derived using a Gaussian approximation (GA) approach.
Jingke Dai
doaj +1 more source
RZ Line Coding Scheme With Direct Laser Modulation for Upgrading Optical Transmission Systems
This study reports the efficient use of a direct laser modulated response measured with the return-to-zero coding scheme in optical transmission systems.
El-Hageen Hazem M. +2 more
doaj +1 more source
Orthogonal Space Time Block Coding for Spatial Pulse Position Modulation
The system performance of Spatial Pulse Position Modulation (SPPM) is poor in turbulent channels. In order to solve this problem, the bit complement orthogonal space time Block Coding for Spatial Pulse Position Modulation (BCOSTBCSPPM) is proposed by ...
Zhong-yang MAO +5 more
doaj +1 more source

