multicarrier CDMA wireless systems
PERFORMANCE ENHANCEMENT OF MULTICARRIER-CDMA WITH PAPR
... of CDMA and OFDM ...MC CDMA, data symbols of modulated bits are spread by spreading codes and then mapped into subcarriers of a MC-CDMA modem data symbol which is spread across frequency ...
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Multiuser Detection in Multicarrier CDMA Systems Employing Both Time Domain and Frequency Domain Spreading
... Recently, multicarrier DS-CDMA (MC DS-CDMA) has at- tracted wide attention in the field of wireless communica- tions [1], ...posed multicarrier DS-CDMA scheme employs both the ...
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Timing Free Blind Multiuser Detection for Multicarrier DS/CDMA Systems with Multiple Antennae
... on wireless channel; (b) in the large signal-to-noise ratio regime, the length of the training phase should be in the order of the number of transmit antennae; (c) in the region of low signal-to-noise ratios, ...
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Generalized Multicarrier CDMA: Unification and Linear Equalization
... in wireless CDMA ...ciency. Multicarrier (MC) CDMA systems have been developed to capitalize on both OFDMA’s resilience to MUI and direct- sequence (DS) CDMA’s robustness against ...
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Design of a Baseband Transceiver for Multicarrier CDMA Communications
... Although the MC-CDMA technology has a great poten- tial as a candidate for future downlink wireless communi- cation systems, it also has some drawbacks. The high peak- to-average power ratio (PAPR) ...
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Multicarrier DS CDMA: A Multiple Access Scheme for Ubiquitous Broadband Wireless Communications
... of CDMA systems. In the context of SC DS-CDMA communicating over various propagation channels including indoor, open rural, suburban, and urban areas, transmit diversity schemes designed on the basis ...
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Fractionally Spread Multicarrier CDMA: A Multiple Access Scheme for Various Wireless Channels
... communication systems [1]-[7], the total bandwidth available is divided into a number of subbands, where each subband may employ direct-sequence (DS) spread- ing and each subband signal is transmitted with the aid ...
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Design and Performance Analysis of an Adaptive Receiver for Multicarrier DS CDMA
... broadband wireless mobile communi- cation systems are expected to support various services over a multitude of channels encountered in indoor, open rural, suburban, and urban environments, while maintaining ...
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PAPR Reduction Using PSO-GSA Tuned PTS Techniques in MC-CDMA System
... domain. Multicarrier systems such as Orthogonal Frequency Division Multiplexing (OFDM) and Multi Carrier Code Division Multiple Access (MC-CDMA) are considered to be the promising technologies for 4G ...
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Performance of the Smart Antenna Aided Multicarrier DS CDMA and its Uplink
... of wireless systems, since they are capa- ble of radiating and receiving energy in and from the intended directions, which potentially reduces the interference amongst wireless users ...
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DOA Estimation in the Uplink of Multicarrier CDMA Systems
... plication to a scenario with tens of users and several paths per user (as envisioned in fourth generation wireless sys- tems) seems hardly viable. Schemes for estimating the DOAs in a CDMA multiuser system ...
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Reverse Link Outage Probabilities of Multicarrier CDMA Systems with Beamforming in the Presence of Carrier Frequency Offset
... Future wireless communication systems demand high-data- rate multimedia transmissions in diverse mobile environ- ...the multicarrier (MC) CDMA system, which is a combination of orthogonal ...
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Performance of multicarrier complementary coded CDMA under frequency selective Nakagami m fading channels
... future wireless communication systems. MC CC-CDMA systems transmitting over frequency-selective channels suffer from multiple access interference (MAI) owing to non-ideal correlation ...
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IJCSMC, Vol. 5, Issue. 7, July 2016, pg.67 – 73 A Review on MC-CDMA on Mobile Environment
... implementation and simple receiver design are especially important in wideband applications, where the data rate and consequently the processing burden are very high. However, sinusoid waveforms which are used as the ...
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Differential space time modulation schemes for smart antenna aided generalized multicarrier DS CDMA systems
... In this contribution we have proposed two differential space- time processing schemes based on the principles of DSTS and DSSTS, in order to enhance the attainable performance of gen- eralized MC DS-CDMA ...
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Design and Implementation of MC CDMA Systems for Future Wireless Networks
... codesign flow enables a top-down design from a system mod- elisation step to implementation on a prototyping board un- der real-time constraints, as illustrated in Figure 1. The first step aims at establishing ...
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Interference cancelation scheme with variable bandwidth allocation for universal filtered multicarrier systems in 5G networks
... UFMC systems is shorter than that of FBMC systems due to their different ...UFMC systems, for example, the performance evaluation in a sce- nario with relaxed synchronization [14], a frame structure ...
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Combined Interleaving and Companding for Papr Reduction in OFDM Systems
... In this paper, proposed scheme will be presented to reduce the PAPRby combining the interleaving and companding methods. This scheme will be compared with the original system and the system that uses clipping method for ...
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Performance Analysis of Multicarrier Systems in the Presence of Smooth Nonlinearity
... assumption on input signal, and as a result can be used for SDR and out-of-band regrowth characterization when the number of MCM subcarriers is arbitrary small. We also show here that the asymptotical simplification ...
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Survey of Interference Mitigation Techniques and Correlation Properties of Spreading Codes for MC-CDMA System
... E.Geraniotis [7] suggested Slow Frequency hopping algorithm involve changing or hopping carrier frequency in every predetermined time interval For slow frequency hopping (SFH), the predetermined time interval is ...
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