Wireless Myths, Realities, and Futures: From 3G/4G to Optical and Quantum Wireless

Abstract

This paper evaluates both the operational third-generation (3G) as well as the emerging fourth-generation (4G) wireless systems and investigates new technologies that might transpire and change things in the future.

EXIT Chart Aided Convergence Analysis of Recursive Soft <inline-formula> <tex-math notation="LaTeX">$m$</tex-math> </inline-formula>-Sequence Initial Acquisition in Nakagami-m Fading Channels

“…6 it can be observed that the polynomial g 1 (D) requires the fewest decoding iterations to reach the top right corner at [1,1] for both SNR values. Since g 2 (D) requires fewer decoding iterations to reach the [1,1] corner, we may conclude that it outperforms g 3 (D). This shows that the EXIT chart based performance prediction agrees with the MItrends of Fig.…”

“…In the current era of mobile communication android phones, tablets, notebooks and laptops are in great demand throughout the world, which has resulted in an exponential increase of data traffic [1,2]. Hence the information transmission over the channel should be as bandwidth-efficient as possible [1,2].…”

“…Hence the information transmission over the channel should be as bandwidth-efficient as possible [1,2]. Fortunately, the performance of wireless systems can be enhanced using iterative decoding, where extrinsic soft information is exchanged between the constituent receiver components [3].…”

“…Fortunately, the performance of wireless systems can be enhanced using iterative decoding, where extrinsic soft information is exchanged between the constituent receiver components [3]. The increased tele-traffic has led to the development of new enabling techniques operating at increased millimetre wave carrier frequencies, where more bandwidth is available for small cells [1,2]. These advances will improve the area spectral efficiency in tele-traffic hot spots, such as stadiums, shopping malls etc.…”

Optimization of Visible-Light Optical Wireless Systems: Network-Centric Versus User-Centric Designs

“…As a truly revolutionary paradigm shift [1], [2], wireless technology relying on radio waves has become an integral part of our everyday life, facilitating basic services, such as making a phone call or sending a message, as well as nearfield-communication-aided mobile payment. The radio waves occupy the 3 kHz∼300 GHz electromagnetic band, which has been widely used for communication purposes.…”