Refer wimax vs lte page in terminology section. Difference between OFDM and OFDMAFollowing table summarize important comparison between OFDM and OFDMA modulation types. FeaturesOFDMOFDMA Full Form Orthogonal Frequency Division Multiplexing Orthogonal Frequency Division Multiple Access Basic Principle Divides a...
Tone reservation (TR) is one of the attractive techniques to reduce peak-to-average power ratio (PAPR) in orthogonal frequency division multiplexing system. As conventional TR technique requires exhaustive searching over all the combinations of the given peak reduction tone (PRT) sets, it results i...
METHOD, SYSTEM AND DEVICE FOR ERROR DETECTION IN OFDM WIRELESS COMMUNICATION NETWORKS WITHOUT FULL FORWARD ERROR CORRECTION DECODINGA system, method and device for error detection/estimation in OFDM communications systems is proposed. The disclosed mechanism allows an efficient error prediction in a ...
1.Fulldiversity STB codes review In this subsection, we review the basic principle of STB code that provides maximum possible diversity for multiple transmit antennas in wireless communications. Let L,M and T be positive integers, a complex orthogonal STB code is defined by a T×M dimensional ...
As a result, the first primary objective of this research is to derive the BER performance for the proposed system across a variety of scenarios in exact form and match it to the simulation results. In the performance study of a NR-polar QAM-OFDM system, the nonlinearity of the power ampli...
, specialist in wireless communication IC development is pleased to announce the release of its GDB1000 SoC for Sub-GHz wireless communication solution and compliant with IEEE 802.15.4g/u/v. This is the first SoC capable of both FSK / OFDM modulations and embedding all processing power (MCU ...
form. When the channel input is constrained to a modulation alphabet, the achievable information rate is reduced to thecoded modulation (CM) capacityfor which no closed-form expression exists [15]. Applying binary coding and decoding, as is the case in virtually all practical systems, further ...
performance enhancements over existing wireless technology. 1 Adaptive Loading and MIMO Adaptive modulation is an important technique that yields increased data rates over non-adaptive uncoded schemes. An inherent assumption in channel adaptation is some form of channel knowledge at both the transmitter an...
An inverse fast Fourier transform (IFFT) is often used to form the subcarriers. The number of orthogonal subcarriers determines the fast Fourier transform (FFT) size (N) to be used. Orthogonal Frequency Division Multiple Access (OFDMA) is a multi-user version of OFDM. For a communication ...
Performance Analysis of High-Rate Full-Diversity Space Time Frequency/Space Frequency Codes for Multiuser MIMO-OFDM MIMO-OFDM has been recognized as one of the most promising techniques to support high data rate and high performance wireless systems. In particular, codin... SHELIM, R.,MATIN, M...