http://ieeexplore.ieee.org TOC Alert for Publication# 48 2013 May 21 38 2 C1 C4 168 38 2 C2 C2 101 38 2 209 210 2753 38 2 211 225 2929 38 2 226 242 3728 38 2 243 254 1988 38 2 255 262 1402 38 2 263 274 2475 38 2 275 284 1077 -1 narrowed the root-mean-square difference (RMSD) of (0.00-0.11) m s^-1 between the 3-min interval original data and the hourly mean data for all the sampled data, which may be regarded as a measure of error. Throughout the tidal phases, the divergence from the inverted current showed a positive (negative) distribution in the shallow (deep) region as an overall view. However, the divergence for the entire tomography domain was nearly equal to zero, corresponding to no net transport. This result implies that the observational errors are quite small for the present experiment. This experiment reaffirms that coastal acoustic tomography is an accurate and efficient observational method for continuously mapping tidal current structures in coastal regions that are characterized by heavy shipping traffic and active fishing.]]> 38 2 285 296 4050 38 2 297 307 2164 38 2 308 322 3829 L₀-norm of the complex-valued channel taps. The sparseness effect of the proposed algorithms is successfully demonstrated by estimating a mobile shallow-water acoustic channel. The clear superiority of the new algorithms over state-of-the-art sparse adaptive algorithms is shown. Moreover, the proposed algorithms are employed by a channel-estimate-based decision-feedback equalizer (CEB DFE). These CEB DFE structures are compared with a direct-adaptation DFE (DA DFE), which is based on sparse and nonsparse adaptation. Our results confirm the improved error-rate performance of the new CEB DFEs when the channel is sparse.]]> 38 2 323 332 2286 38 2 333 346 2996 38 2 347 357 1878 38 2 358 374 6191 38 2 375 382 1824 38 2 383 395 3149 38 2 396 405 2525 38 2 406 406 106 38 2 407 407 1155 38 2 408 408 1792 38 2 C3 C3 137