MIMO-OFDM
AN ADAPTIVE POWER ALLOCATION SCHEME FOR ROBUST TRANSMISSION OF JPEG COMPRESSED IMAGES OVER MIMO-OFDM SYSTEMS
... a MIMO-OFDM system for WLANs is ...robust MIMO-OFDM system for use in ...of MIMO-OFDM and the UPA scheme considered prove to reduce transmission errors compared to the existing ...
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Performance of MIMO-OFDM system using Linear Maximum Likelihood Alamouti Decoder
... In this paper, a new subcarrier mapping technique that is combined with LMLAC decoding techniques is proposed using STFBC MIMO-OFDM system. The simulation results have shown that the performance improvement ...
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Channel estimation in MIMO-OFDM systems based on comparative methods by LMS algorithm
... In mobile telecommunication systems, a channel estimating method which is able to follow its changes at any moment, quickly, precisely and with less calculating operations, is a mater of high significance. The aim of ...
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PAPR Reduction Using BPSO/PTS and STBC in MIMO OFDM System
... Abstract: Problem statement: The Multiple Input Multiple Output (MIMO) Orthogonal Frequency Division Multiplexing (OFDM) system has been receiving a great attention, as one of solutions for achieving high ...
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Low bit rate feedback strategies for iterative IA-precoded MIMO-OFDM based system
... In this paper, we design new quantization strategies that allow efficient CSI feedback for IA-precoder MIMO-OFDM- based systems. A quantized version of the CSI associated with the different links between BS ...
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MIMO-OFDM channel estimation: a pilot sequence design for time-domain processing
... a MIMO-OFDM pilot sequence design and associated channel estimation method that succeeds in extracting each channel impulse response (CIR) estimate with minimal computational ...
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EVALUATION OF BER FOR VARIOUS FADING CHANNEL IN DWT BASED MIMO-OFDM SYSTEM
... Abstract— MIMO communication is mainly use in the OFDM to improve the communication performance and ...based MIMO-OFDM is used in this paper. Compare to the FFT based MIMO-OFDM ...
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IMPLEMENTATION OF MIMO OFDM STF CODING FRAMEWORK FOR WIRELESS COMMUNICATION SYSTEM
... Space Time Frequency Block (STFB) coding schemes are used to enhanced the system performance and reliability by taking advantage of diversity of space, time and frequency inherent in MIMO-OFDM system. The ...
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Quasi-Orthogonal Space-Time-Frequency Trellis Codes for Mimo-OFDM Systems
... the MIMO-OFDM channel, it does not provide additional coding gain, array gain and receive diversity as our proposed code do for four transmit and two receive ...
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Construction and analysis of quaternion MIMO-OFDM communications systems
... proposed MIMO-OFDM technique presented in the previous section can take advantage of the diversity in several dimensions, ...in OFDM modulation made use of trellis codes ...selective MIMO ...
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Energy Efficiency of MIMO-OFDM Communication System
... a MIMO-OFDM system. The combination MIMO-OFDM is very natural and beneficial since OFDM enables support of more antennas and larger bandwidths since it simplifies equalization ...
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Modified PTS with FECs for PAPR Reduction in MIMO-OFDM System with Different Subblocks and Subcarriers
... In this paper, modified PTS is combined with forward error-correcting codes (FECs) such as turbo codes and Golay complementary sequences with Reed-Muller codes and used for the PAPR reduction of the transmitted signal in ...
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Técnicas de processamento MIMO-OFDM aplicadas à radiodifusão de televisão digital terrestre
... modulação OFDM, empregada no contexto desse trabalho, suas características, vantagens e ...técnicas MIMO-OFDM, especialmente a técnica de diversidade espaço- temporal Alamouti, largamente conhecida e ...
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Paper on Maximizing the Throughput for MIMO OFDM-CDMA Systems by Evaluating Space Time Frequency Spreading
... frequencies. OFDM has developed into a popular scheme for wideband digital communication, whether wireless or over copper wires, used in applications such as digital television and audio broadcasting, DSL ...
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Transmission Cooperative Strategies for MIMO-OFDM Heterogeneous Networks
... Electronics and Telecommunications from the University of Aveiro, Aveiro, Portugal, in 2002 and 2007, respec- tively. He is currently an Assistant Professor with the Dept. of Electronics, Telecommunications and ...
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Proposta de um esquema MIMO-OFDM com máxima diversidade em frequência para canais variantes no tempo
... Muitas propostas que combinam STBC com outras técnicas surgiram no sentido de minimizar a probabilidade de erro de bit [37][38][42][43][45][46][48]. O esquema de Lee, por exemplo, combina o princípio da técnica de ...
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A Proposed Efficient Architecture for OFDM-MIMO Systems Using SVD
... In this paper we described Design and implemented SVD matrix decomposition technique using Givens rotations. Low area was achieved using single CORDIC unit. The low-area MDUs have been shown to be suitable for ...
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RF Transmitter and Receiver for OFDM
... The convergence of multiple technologies such as wireless communication, real-time analyt- ics, machine learning, commodity sensors, and embedded systems, where machines and devices exchange information in real time ...
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Massive MIMO transmission techniques
... A good alternative approach to cope with ISI effects is the combination of SC modulations with FDE, which has comparable complexity to OFDM while avoiding the above mentioned drawbacks associated with MC ...
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Controlo Unfalsified em Sistemas MIMO
... Numa primeira fase, a abordagem aos conceitos consistiu no desenvolvimento das es- truturas de BT e UC, para um sistema SISO. Ambas apresentaram resultados satisfatórios recorrendo a controladores SISO, sem efeito ...
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