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In this paper, a joint synchronization and Doppler scaling factor estimation algorithm has been proposed for underwater acoustic communications. The training sequence, which consists of two Zadoff-Chu (ZC) sequences being conjugate with each other, is utilized to synchronize and estimate Doppler scaling factor, time delay and carrier frequency offsets (CFOs). ZC sequences are well designed to show...
An efficient hardware-optimized Physical Random Access Channel (PRACH) baseband signal generation algorithm and its ASIC implementation in the LTE user equipment (UE) transmitter are presented in this paper. A simplified DFT of the Zadoff-Chu (ZC) sequence as well as a phase computation are applied to the prime size DFT of the PRACH preamble and the large size IDFT is accomplished by groups of smaller...
Demodulation reference signal plays a very important role in channel estimation and equalization in the receiver within the LTE system. At beginning, this paper provides the various formulas that generate the demodulation reference signal (DMRS) in the physical uplink Shared channel (PUSCH), and then presents the design flow chart for programming realization. After that, Using TI(Texas Instruments...
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