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multi-carrier radio systems

Exploring the reconfigurability options of multi carrier CDMA in cognitive radio systems

Exploring the reconfigurability options of multi carrier CDMA in cognitive radio systems

... Example of an adaptation cycle using IRIS: At this point, we assume the availability of a system parameter identified as the channel map (CM). Fig. 7 illustrates a conceptual reconfigura- tion process explaining the ...

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Energy efficient multi cell resource allocation in cognitive radio enabled 5G systems

Energy efficient multi cell resource allocation in cognitive radio enabled 5G systems

... In the literature, plenty of existent works pay atten- tions to the RA problem by assuming one primary cell and a single secondary cell. The authors in [12] uti- lized the spectrum holes in primary user (PU) bands as ...

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Stochastic Petri Nets for Wireless Networks

Stochastic Petri Nets for Wireless Networks

... (OFDM) multi-carrier systems with SHLPN formalism in order to simplify the cross-layer performance analysis of modern wireless ...of radio resource management algorithms and spur a new line of ...

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A resource allocation approach to control 
		interference in Multi  Carrier DS CDMA systems

A resource allocation approach to control interference in Multi Carrier DS CDMA systems

... single-carrier systems under multi-cell case ...available radio resources and also has proposed a global priority function for scheduling the users waiting in queue in the next scheduling ...

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Lowest PAPR Selection Technique from SLM and PTS with One IFFT Block in Wireless MC-CDMA Communication Systems

Lowest PAPR Selection Technique from SLM and PTS with One IFFT Block in Wireless MC-CDMA Communication Systems

... century systems (3 rd generation and beyond) have to support a large range of multimedia services such as speech, images and data with different and variable bit rates up to 2 ...Future radio communication ...

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PAPR Reduction Using PSO-GSA Tuned PTS Techniques in MC-CDMA System

PAPR Reduction Using PSO-GSA Tuned PTS Techniques in MC-CDMA System

... 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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Statistical Delay QoS Driven Energy Efficiency and Effective Capacity Tradeoff for Uplink Multi User Multi Carrier Systems

Statistical Delay QoS Driven Energy Efficiency and Effective Capacity Tradeoff for Uplink Multi User Multi Carrier Systems

... in multi-user OFDMA systems, including the transmission power, signal processing power, and circuit power from both the transmitter and the receiver sides, was first established in ...less multi-hop ...

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Resource management issues for multi carrier relay enhanced systems

Resource management issues for multi carrier relay enhanced systems

... cellular systems with and without relay nodes. For both cases, quality of radio links is assessed and discussed with a focus on achieving increased performance fairness across the ...including ...

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System-Level Simulation and Radio Resource Management for Distributed Antenna Systems with Cognitive Radio and Multi-Cell Cooperation using Imperfect Information

System-Level Simulation and Radio Resource Management for Distributed Antenna Systems with Cognitive Radio and Multi-Cell Cooperation using Imperfect Information

... in multi-carrier systems to obtain a single performance metric that captures the performance of a block of sub-carriers, each one with potentially different SINR ...

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Design of Space-Time Coded Single-Carrier and Multi-Carrier MIMO-CDMA systems

Design of Space-Time Coded Single-Carrier and Multi-Carrier MIMO-CDMA systems

... communication systems, in these systems multiple access interference mitigation at the receiver via multi-user beam forming and space-time modulation and coding for MIMO systems ...in ...

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Performance Analysis of Adaptive Transmission Aided by Long Range Channel Prediction for Realistic Single- and Multi-Carrier Mobile Radio Channels

Performance Analysis of Adaptive Transmission Aided by Long Range Channel Prediction for Realistic Single- and Multi-Carrier Mobile Radio Channels

... single carrier prediction system, we concentrate on the scenario where we observe a received uplink signal at the carrier frequency f 1 and attempt to predict the downlink signal at the carrier ...

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Carrier Frequency Offset Estimation for OFDM Systems Using Time/Frequency-Domain Techniques

Carrier Frequency Offset Estimation for OFDM Systems Using Time/Frequency-Domain Techniques

... chosen multi-carrier modulation technique for wireless and multimedia communication ...mobile radio channels ...to radio channel ...(WiMax) systems and HIPERLAN2 (High Performance Local ...

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Scalar Wavelet packet based multi-user Cognitive Radio Transceiver

Scalar Wavelet packet based multi-user Cognitive Radio Transceiver

... of radio frequency spectrum and for insuring reliable communication ...based systems have been proposed to be the most promising candidate for CR transmission [2]-[5], recent research work propose wavelet ...

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On the Characteristic of Orthogonality for Multi Carrier Based Systems

On the Characteristic of Orthogonality for Multi Carrier Based Systems

... The dominate factors caused by reasons of losing the orthogonality in fading channel including FBC (fading branch correlation), CFO (carrier frequency offset), and even the CPN (carrier phase noise) are ...

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BER Performance of IEEE 802.11ad for Single Carrier and Multi Carrier

BER Performance of IEEE 802.11ad for Single Carrier and Multi Carrier

... In Fig.6.a the BER performance of the system is given when the system is in Single Carrier mode. Here the Modulation used is π/2-QAM16 with a Sample Rate of 1.76 GHz for which Raised Cosine Filter is used. As we ...

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Land Mobile Radio (LMR) Basics Communications 101 Webinar

Land Mobile Radio (LMR) Basics Communications 101 Webinar

... • History of Public Safety Radio • Land Mobile Radio Equipment • Public Safety Radio Spectrum.. • Overview of Pubic Safety Radio Operation and Systems.[r] ...

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Margin Adaptive Resource Allocation for Multi–user OFDM Systems by Particle Swarm Optimization and Differential Evolution

Margin Adaptive Resource Allocation for Multi–user OFDM Systems by Particle Swarm Optimization and Differential Evolution

... Optimization by MPSO requires position and velocity val- ues as initial population (swarm) set [12]. For defining the problem of multi–user OFDM systems, we need to obtain position and velocity matrices as ...

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Capacity of multi channel cognitive radio systems: bits through channel selections

Capacity of multi channel cognitive radio systems: bits through channel selections

... wideband multi-channel cognitive radio systems and transmitters with limited sensing capability, signals are transmitted only over a subset of usable chan- ...

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NX 64 Digital Radio Link

NX 64 Digital Radio Link

... The digital down convertor takes the 70 MHz IF signal, digitally down converts and FM demodu- lates the initial partial response data stream. Up to 5 user-defined linear-phase FIR filters al- low the radio to ...

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IMPLEMENTATION OF HIGH SPEED DATA TRANSMISSION USING VLC

IMPLEMENTATION OF HIGH SPEED DATA TRANSMISSION USING VLC

... of radio waves. It refers to 5G Visible Light Communication systems using Light Emitting Diodes as a medium to high-speed communication in a similar manner as WI-FI ...a carrier as opposed to ...

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