Results 41 to 50 of about 3,263 (149)
BER Performance Simulation of Generalized MC DS-CDMA System with Time-Limited Blackman Chip Waveform [PDF]
, 2010 Multiple access interference encountered in multicarrier direct sequence-code division multiple access (MC DS-CDMA) is the most important difficulty that depends mainly on the correlation properties of the spreading sequences as well as the shape of the ...
Develi, Ibrahim, Kockaya, Kenan
core +1 more source
Coherent and Differential Downlink Space-Time Steering Aided Generalised Multicarrier DS-CDMA
, 2007 This paper presents a generalised MultiCarrier Direct Sequence Code Division Multiple Access (MC DS-CDMA) system invoking smart antennas for improving the achievable performance in the downlink.
El-Hajjar, Mohammed +3 more
core +1 more source
Improved Throughput over Wirelines with Adaptive MC-DS-CDMA [PDF]
2006 IEEE Ninth International Symposium on Spread Spectrum Techniques and Applications, 2006 In this paper, we present a finite-granularity loading algorithm for multicarrier direct sequence code division multiple access (MC-DS-CDMA). The resulting adaptive scheme represents an extension of classical digital multitone (DMT) with spreading in the time domain. The presented algorithm assigns subcarriers, spreading codes, bits and energy per code
Crussière, Matthieu +2 more
openaire +2 more sources
Ant-colony-based multiuser detection for multifunctional-antenna-array-assisted MC DS-CDMA systems
, 2008 A novel Ant Colony Optimization (ACO) based Multi-User Detector (MUD) is designed for the synchronous Multi-Functional Antenna Array (MFAA) assisted Multi-Carrier Direct-Sequence Code-Division Multiple-Access (MC DS-CDMA) uplink (UL), which supports both
Hanzo, L., Hu, B., Xu, C., Yang, L-L.
core +1 more source
Sensitivity of OFDM-CDMA systems to carrier frequency offset [PDF]
, 2006 6 pages;This paper presents the impact of a carrier frequency offset on the performance of 2 dimensional spreading OFDM-CDMA systems. This is measured by the degradation of the Signal to Interference plus Noise Ratio (SINR) obtained after despreading and
Des Noes, Mathieu +3 more
core +2 more sources
, 2006 In this contribution, we study a reduced-complexity multiuser detection aided multicarrier direct-sequence code-division multiple-access (MC DS-CDMA) scheme, which employs both time (T)-domain and frequency (F)-domain spreading.
Hanzo, L., Wei, H., Yang, L-L.
core +1 more source
Performance evaluation of carrier interferometry implementations of MC-CDMA over a wideband channel suffering phase noise [PDF]
, 2005 In this paper the performance of Carrier Interferometry (CI) and Pseudo-Orthogonal Carrier Interferometry (PO-CI) [1] implementations of Multi-Carrier Code Division Multiple Access (MC-CDMA) are investigated.
Armour, SMD +3 more
core +2 more sources
Initial synchronisation of wideband and UWB direct sequence systems: single- and multiple-antenna aided solutions [PDF]
, 2012 This survey guides the reader through the open literature on the principle of initial synchronisation in single-antenna-assisted single- and multi-carrier Code Division Multiple Access (CDMA) as well as Direct Sequence-Ultra WideBand (DS-UWB) systems ...
Hanzo, Lajos, Won, SeungHwan
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Broadband MC DS-CDMA Using Space-Time and Frequency-Domain Spreading
, 2002 In this contribution multicarrier direct-sequence code-division multiple-access (MC DS-CDMA) using space-time spreading (STS) assisted transmit diversity and frequency-domain (F-domain) spreading is investigated in the context of broadband communications
Yang, L-L., Hanzo, L.
core
Another view point on the performance evaluation of an MC-DS-CDMA system
Journal of Communications and Networks, 2009 The results of performance analysis by adopting the channel scenarios characterized as Weibull fading for an multicarrier-direct sequence-coded division multiple access (MC-DS-CDMA) system are proposed in this investigation. On the other hand, an approximate simple expression with the criterion of bit error rate (BER) versus signal-to-noise ratio (SNR)
Joy Iong-Zong Chen, Tai-Wen Hsieh
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