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A node in wireless sensor networks has limited battery capacity. In this case, energy efficiency is crucial to prolong the sensor devices lifetime. In this paper, we propose a simple and energy efficient image compression (SEIC), based on Discrete Cosine Transform (DCT) transform, in addition to our previous proposed method based on Discrete Wavelet Transform (SEIC-DWT). SEIC (DCT or DWT) consists...
Terahertz band (0.1–10 THz) provides very large bandwidth, enabling multimedia transmission at short distance. In macro world, ultra broadband communication networks at THz band (TeraNets) provides very large bandwidth for wireless multimedia sensor networks (WMSN). Similarly, recent development in nano-technology (nano-antenna and nano-transceiver) shows that electromagnetic nanocommunications at...
Electromagnetic communication among nanosensors using time-spread on–off keying (TS-OOK) modulation in terahertz band promises very high transmission rates (up to several terabits per second). Due to scarce battery capacity in nanosensors, energy efficiency is a very important aspect in nanocommunication, as are also bandwidth expansion, multiuser interference, and robustness against transmission...
Nanotechnology is generally considered a technology of the future. It promises to have many implications in various fields, and create revolutionary methods in some circumstances. Due to their size, nanodevices have limited capacities in terms of energy, computation and transmission among others. Networking them allows to increase their effectiveness, and also their communication range. However, data...
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