Turbo multiuser detection for MC-CDMA signals with strongly nonlinear transmitters [PDF]
, 2007 In this paper we consider the uplink transmission in MC-CDMA (multicarrier -coded division multiple access) systems. Since MC-CDMA signals are OFDM-like multicarrier signals, they have high envelope fluctuations and a high PMEPR (Peak-to-Mean Envelope ...
Dinis, Rui, Silva, Paulo
core +1 more source
Suitable Spreading Sequences for Asynchronous MC-CDMA Systems
Journal of Telecommunications and Information Technology, 2018 In order to meet the demand of high data rate transmission with good quality maintained, the multi-carrier code division multiple access (MC-CDMA) technology is considered for the next generation wireless communication systems. However, their high crest
Mouad Addad, Ali Djebbari
doaj +1 more source
Sensitivity of Multicarrier Two-Dimensional Spreading Schemes to Synchronization Errors
EURASIP Journal on Wireless Communications and Networking, 2008 This paper presents the impact of synchronization errors on the performance of a downlink multicarrier two-dimensional spreading OFDM-CDMA system. This impact is measured by the degradation of the signal to interference and noise ratio (SINR) obtained ...
Ros Laurent +3 more
doaj +2 more sources
Space-Time Coded MC-CDMA: Blind Channel Estimation, Identifiability, and Receiver Design
EURASIP Journal on Advances in Signal Processing, 2002 Integrating the strengths of multicarrier (MC) modulation and code division multiple access (CDMA), MC-CDMA systems are of great interest for future broadband transmissions. This paper considers the problem of channel identification and signal combining/
Li Hongbin, Sun Wei
doaj +1 more source
Blind Identification and Equalization of MC-CDMA Systems Using Higher Order Cumulants
International Journal of Advances in Telecommunications, Electrotechnics, Signals and Systems, 2014 In this work we propose an algorithm based on fourth order cumulants for identification of the linear system (Finite- Impulse Response (FIR)) with Non Minimum Phase (NMP) excited by non-Gaussian sequences, independent identically distributed (i.i.d).
Mohammed Zidane +3 more
doaj +1 more source
Joint turbo equalization and multiuser detection of MC-CDMA signals with low envelope fluctuations [PDF]
, 2008 In this paper, we consider the uplink transmission in multicarrier code-division multiple-access (MC-CDMA) systems. As other multicarrier signals, MC-CDMA signals have high envelope fluctuations and a high peak-to-mean envelope power ratio (PMEPR), which
Dinis, Rui, Silva, Paulo
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Joint multiuser detection and cancelation of nonlinear distortion effects for the uplink of MC-CDMA systems [PDF]
, 2006 In this paper we consider the uplink transmission in MC-CDMA systems (multicarrier coded division multiple access). To reduce the envelope fluctuations of the transmitted signals, the MC-CDMA signal associated to each MT (mobile terminal) is submitted to
Dinis, Rui, Silva, Paulo
core +1 more source
Identity‐Enabled CDMA LiDAR for Massively Parallel Ranging with a Single‐Element Receiver
Laser &Photonics Reviews, Volume 19, Issue 23, December 3, 2025.A novel LiDAR system integrates CDMA modulation with a single‐element detector to achieve massive channel parallel 3D imaging. By using a user identification code and a correlation‐based feedback loop, it overcomes signal collisions and the near‐far problem.
Yixiu Shen, Zi Heng Lim, Guangya Zhou
wiley +1 more source
Adaptive Algorithms Versus Higher Order Cumulants for Identification and Equalization of MC-CDMA
Journal of Telecommunications and Information Technology, 2014 In this paper, a comparative study between a blind algorithm, based on higher order cumulants, and adaptive algorithms, i.e. Recursive Least Squares (RLS) and Least Mean Squares (LMS) for MultiCarrier Code Division Multiple Access (MC-CDMA) systems ...
Mohammed Zidane +4 more
doaj +1 more source
Performance Improvement of Multi-UserMC-CDMA system Using Discrete Hartly Transform Mapper [PDF]
Engineering and Technology Journal, 2013 Future wireless communication systems must be able to accommodate a large number of users and simultaneously to provide the high data rates at the required quality of service. In this paper a method is proposed to perform the N-Discrete Hartley Transform
Ali T. Shaheen
doaj +1 more source