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In the LTE system, uplink synchronization can be established through the random access channel, by which timing and frequency offsets between transceivers can be estimated and adjusted. As the single carrier frequency division multiple access (SC-FDMA) structure is utilized in LTE uplink, preambles for the random access channel should be generated and(More)
For the coordinated multipoint (CoMP) transmission in Long-Term Evolution (LTE) systems, its performance is greatly impacted by the estimation of timing offsets (TOs) between cell-edge user equipment (UE) and transmit points, which is supposed to be dealt with by using the random access (RA) procedure. Available RA schemes for the CoMP transmission offer(More)
One major concern of employing <italic>frequency-domain pulse shaping (FDPS)</italic> to reduce the peak-to-average power ratio of single-carrier frequency-division multiple-access (SC-FDMA) signals is the decrease of system spectral efficiency due to the excess bandwidth wasted in the existing band allocation schemes (BASs). To improve the spectral(More)
The adsorption of carboxymethylcellulose (CMC), and the subsequent effect on bubble-surface interactions, has been studied for a graphite surface. CMC adsorbs on highly oriented pyrolytic graphite (HOPG) in specific patterns: when adsorbed from a solution of low concentration it forms stretched, isolated and sparsely distributed chains, while upon(More)
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