[PDF] Top 20 Joint passive time reversal and multichannel equalization for underwater communications

... simultaneous equalization and time reversal the two systems are operated in tandem, ...i.e., time reversal creates a single-channel signal which is then independently processed ... See full document

... in underwater coherent communications using time-reversal ...“virtual" time-reversal mirror (TRM) that is implemented electronically at the receiver array and ... See full document

... years Time Reversal (TR) has received particular attention from the scientific ...to communications, were suggested [1], [2]. Passive TR uses a receive-only array, and a probe-signal is ... See full document

... dispersive underwater channels where impulse re- sponses lasting tens of miliseconds cannot be reliably handled by recently proposed methods due to limitations of channel estimation ...on passive ... See full document

... acoustic communications in waveguides is known to be prone to severe multi- path, which strongly limitates practical transmission rates with actual equalization tech- ...virtual Time Reversal ... See full document

... Passive time reversal has aroused considerable interest in underwater communications as a computationally inexpensive means of mitigating the intersymbol interference introduced by the ... See full document

... Abstract: Passive Time Reversal (pTR) is a low complexity receiver scheme that uses multichannel probing for time signal refocusing, thus reducing time spreading and ... See full document

... coherent communications, underwater channels are very challenging due to complex multipath structure, rapidly time-varying fading and large Doppler ...The time-variant fading and ... See full document

... modulation and equalization- based reception remains the technique of choice in band- width-efficient underwater communications, recently pub- lished experimental results have demonstrated ... See full document

... adapted passive Time Reversal (pTR) and Decision Feedback Equalizer (DFE) for underwater communications between a moving source and a fixed receiver array (implying a ... See full document

... of underwater acoustic signal pro- cessing such as time delay estimation, channel equalization and optimization, eventu- ally contributed to the literal explosion of the air-wireless ... See full document

... in equalization of doubly spread channels, this chapter presents an overview of underwater acoustic communications using wireless sys- tems, reviews the state of the art and shows the ... See full document

... Abstract: Passive Time Reversal (pTR) is an emerging technique for underwater communications where a channel probe is sent ahead of the data ...a time window for post ... See full document

... history, and numerous fast variants are known where the complexity scales linearly rather than quadratically [1], ...robustness and simple modular structure make them attractive for hardware or embedded ... See full document

... the underwater acoustic channel in a method called Time Reversal (TR) [1], [2] that was shown to efficiently focalize a received signal, in time and space, at the source position in the ... See full document

... Abstract—Passive Time Reversal (pTR) is one of the variants of time reversal applicable to digital underwater ...In passive time reversal a probe-signal is ... See full document

... In this paper, we consider low-PMEPR (Peak-to-Mean En- velope Power Ratio) MC-CDMA (Multicarrier Coded Di- vision Multiple Access) schemes. We develop frequency- domain turbo equalizers combined with an iterative estima- ... See full document

... disciplinary and inter-sectoral research, knowledge sharing and ...researchers and entrepreneurs ready to address complex engineering problems and innovation that are required to work both at ... See full document

... of joint cracking is inconsistent with many physical phenomena that define the joint cracking ...of joint cracking is related to cavity formation rather than bubble ...Before and after ... See full document

... moving and moored operations: since the signal acquisition completely takes place inside the cilindric case, no cable connecting the acoustic sensor to a recording device is ...cable and waves hitting the ... See full document