[PDF] Top 20 Orthogonal frequency division multiplex synchronization techniques for frequency selective fading channels

... The frequency acquisition algorithm has to provide an initial frequency error estimate, which is sufficiently accurate for the subsequent frequency tracking algorithm to support fine ...the ... See full document

... On the basis of similar methodology, a Novel Nonlinear Constellation Precoding for OFDM systems with Subcarrier grouping [18] is proposed. In this scheme full set of subcarriers are splitted into smaller groups coded by ... See full document

... narrowband channels at different frequencies to minimize interference and ...modulation techniques. OFDM is a special case of Frequency division multiplexing (FDM) scheme in which numerous ... See full document

... timing synchronization and channel estimation scheme for orthogonal frequency division multiplexing (OFDM) ...a frequency-domain timing synchronization algorithm is ...multipath ... See full document

... modulation techniques can achieve only limited data rates due to the restrictions imposed by the multipath effect of wireless channel and the receiver ...mechanism. Orthogonal Frequency ... See full document

... Corresponding Synchronization results are also given for their performances ...FFT-based frequency estimator is Available as shown in OFDM System Design section, using Gaussian channel and Multipath ... See full document

... Abstract--Orthogonal frequency-division multiplexing (OFDM) is a method of encoding digital data on multiple carrier ...a frequency-division multiplexing (FDM) scheme used as a digital ... See full document

... dispersive fading of the wireless channels will cause more severe inter-symbol interference (ISI) if single-carrier modulation, such as in time-division multiple access (TDMA) or Global System for ... See full document

... Space Frequency Block Codes (SFBC) are used to obtain diversity ...the frequency domain. In SFBC multiple flat fading channels can be obtained by performing orthogonal frequency ... See full document

... the frequency-selective ...channel[7]. Orthogonal frequency division multiplexing (OFDM) has beenshown to get ISI very well by converting the frequency selective channel ... See full document

... In frequency-selective fading condi- tions, orthogonal restoring combining (ORC), maximal ratio combining (MRC), and minimum mean square error combining (MMSEC) have been a promising tech- ... See full document

... coding techniques include layered space-time codes [1], space-time trellis codes (STTCs) [2, 3], space-time block codes (STBCs) [4, 5], and super-orthogonal space-time trellis codes (SOSTTCs) [6, ...a ... See full document

... assume frequency-flat channels and suffer performance degradation over frequency-selective ...for frequency-selective fading en- vironments has attracted great attention, ... See full document

... other techniques, pilot-aided MMSE estimation was also applied in the con- text of space-time block coding (STBC) either in the time do- main for the estimation of channel impulse response (CIR) [12, 13] or in the ... See full document

... of orthogonal frequency-division multiplexing (OFDM) technology in communication systems, its synchronization in multipath fading channels remains an important and challenging ... See full document

... Abstract— The video performance of a 155-Mbps wireless asynchronous transfer mode (WATM) proposal and that of a 2-Mbps Universal Mobile Telecommunications System (UMTS) concept is evaluated for a range of low- to ... See full document

... to frequency-selective ...over frequency-selective Rayleigh-fading channels was in the range of ...over frequency-selective Rayleigh-fading channels, ... See full document

... transmission, orthogonal frequency division multiplexing (OFDM) is becoming a vital in wireless communication systems like 3G, 4G and even in 5G ...multipath fading and has a capability of ... See full document

... (MIMO) channels [10], [11] or joint transmitter receiver systems ...multipath fading, with prior knowledge of the channel at the ...flat fading channel conditions without co-channel interference ...a ... See full document

... processing techniques to convert from the received digitally encoded signal to the analogue audio content, the complexity of the electronic circuitry required to do this is ... See full document