adaptive OFDM
MMSE Channel Prediction Assisted Symbol by Symbol Adaptive OFDM
... Subband adaptive OFDM (AOFDM) has been shown to be an effec- tive method of improving the system performance in mobile environ- ments, where the subbands least affected by frequency-selective fading are ...
5
Robust Adaptive OFDM with Diversity for Time Varying Channels
... robust adaptive modulation scheme for OFDM with transmit and/or receive ...3, adaptive OFDM with trans- mit diversity is studied, the detrimental effects of a time- varying channel is ...
8
Advances in the Analysis of Adaptive OFDM Systems
... in OFDM, numerous approaches have been ...on OFDM signal reconstruction at the receiver in spite of the introduced ...iterative adaptive clipping and filtering technique and provide some new results ...
165
Adaptive OFDM-IM System Over Faded Shadowing Channel
... traditional OFDM. In this paper, an adaptive technique with OFDM-IM is introduced in an M-QAM based scheme to maintain a guaranteed level of average bit error probability (ABEP) with enhanced ...for ...
15
Adaptive OFDM Modulation Used For SDR
... standards. Adaptive modulation is an important component of software radio .... Adaptive modulation is a way to improve the tradeoff between spectral efficiency and bit error ...therefore adaptive ...
5
Layered Video Transmission on Adaptive OFDM Wireless Systems
... above-mentioned adaptive ordered subcar- rier selection algorithm, where UEP is simply achieved by assigning the bits, belonging to each layer, to subchannels starting from the most reliable down to the least ...
11
Target Detection in Compound-Gaussian Clutter with Adaptive OFDM Radar
... signal, OFDM has drawn much attention due to the flexibly available spectral resources, good ambiguity function (AF) and frequency diversity characteristic [4, ...on OFDM radar such as target detection and ...
9
Adaptive OFDM Wireless Communication Development For Wireless Medical Image Transmission In Different Resolution
... In adaptive OFDM, the bit error probability of OFDM subcarriers are transmitted in time dispersive channels depends on the frequency domain channel transfer ...the OFDM symbol to be ...
24
Performance Analysis of Adaptive Modulation in OFDM Systems
... Abstract— OFDM technology promises to be a key technique for achieving the high data capacity and spectral efficiency requirements for wireless communication ...of adaptive modulation allows a wireless ...
8
Space Time Block Coded Adaptive Modulation Aided OFDM
... time coded AOFDM system. The first scheme is a fixed half-rate turbo and space-time coded adaptive OFDM system. It achieves a high BER performance, but at the cost of a maximum through- put limited to 3 BPS ...
5
Optimize Adaptive Coding Techniques to Improve BER in OFDM System
... using OFDM for two-way communications or for multiuser ...applying OFDM to such applications, and to look at the resulting advantages and ...multiuser OFDM systems. The performance of adaptive ...
5
A Novel MIMO-OFDM Adaptive Receiver in Time-Varying Channels
... an adaptive receiver and construct two-path conjugate transmission that is based on the PRCC ...an adaptive normalized block least mean-squared algorithm to approach the optimal ...such adaptive ...
12
Adaptive Multicarrier Modulation: A Convenient Framework for Time Frequency Processing in Wireless Communications
... the OFDM signal—which is the superposition of a high number of modulated subchannel signals—may exhibit a high instantaneous signal peak with respect to the average signal ...high OFDM signal peaks—which is ...
30
Adaptive modulation for enhanced OFDM systems using fuzzy logic
... of adaptive system with coding of convolution is better than other modulation ...the adaptive system flexibility to work with various desired BER [19], ...an adaptive modulation and coding scheme via ...
8
Adaptive Rate Control for Multi Antenna Multicast in OFDM Systems
... We propose two rate control schemes for multi-antenna multicast in OFDM systems, which aim to maximize the mini- mum average rate over all users in a multicast group. In our system, we do not require all multicast ...
6
Adaptive IIR Notch Filter Design For Cancellation of Periodic Impulsive Noise in OFDM Based Power Line Communications
... (3) Adaptive notch filters. Generally, Adaptive IIR notch filters remove interference using a reference ...then adaptive notch filters (ANFs) are utilized in this kind of ...the OFDM-based PLC ...
8
PAPR Reduction in MIMO OFDM Using Adaptive SLM Scheme
... introduces Adaptive Selected mapping (ASLM) ...an OFDM data block using a set of phase ...the adaptive selected mapping increases the power efficiency and reduces the impulse ...
9
Adaptive antennas at the mobile and base stations in an OFDM/TDMA system
... communications, OFDM, space–time processing, CDMA, digital im- plementation of communication systems, wireless multimedia communications, information theory, and ...
12
OFDM system cyclic prefix characteristic analysis for WIMAX Technology
... duration. OFDM is a spectrally efficient version of multicarrier modulation, where the subcarriers are selected such that they are all orthogonal to one another over the symbol duration, thereby avoiding the need ...
42
Adaptive relay techniques for OFDM-based cooperative communication systems
... In this thesis and most of the previous research work in cooperative systems, it assumed that ideal frequency and time synchronization among nodes. Although this assumption is widely adopted in the literature and seems ...
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