Special issue on broadband mobile communications at very high speeds
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EDITORIAL
Open Access
Special issue on broadband mobile communications at very high speeds Pingzhi Fan1*, Erdal Panayirci2, H Vincent Poor3 and P Takis Mathiopoulos4,5 Future mobile communication systems aim at providing very high-speed data transmission, even under very high mobility scenarios such as high speed wheel-track trains (up to 574.8 km/h test speed or 380 km/h commercial speed), maglev trains (up to 581 km/h test speed or 431 km/h commercial speed), airplanes (about 4001000 km/h commercial speed), guided missiles (about 980–20,000 km/h) or spacecraft (at least 28,440 km/h to remain on an earth orbit, at least 40,320 km/h to leave earth). A related and particularly important commercial application is the strong worldwide increasing demand for broadband wireless communications in high speed railways to provide information and onboard entertainment services to passengers, train control, train dispatch, train sensor status transmission, video surveillance, etc. Consequently, increasing demand on data rates to support broadband high speed communication systems in the presence of frequency selective fading channels with very high mobilities has resulted in research on designing computationally efficient yet faster new algorithms for channel estimation, equalization and detection, as well as fast handover, location update, modeling of rapidly time-varying channels, fast power control and dedicated network architectures, etc. Orthogonal frequency-division multiplexing (OFDM) is becoming a backbone structure of such systems, being standardized as the IEEE's 802.16 family - better known as Mobile Worldwide Interoperability Microwave Systems for Next-Generation Wireless Communication Systems (WiMAX) - and by the Third-Generation Partnership Project (3GPP) in the form of its Long-Term Evolution (LTE) project. Both systems employ orthogonal frequency division multiplexing/multiple access (OFDMA) as well as a new single-carrier frequency-division multiple access (SC-FDMA) format. To promote the IEEE 802.16 standards, recently, a high mobility feature has been introduced (IEEE 802.16 m) to enable mobile broadband * Correspondence: [email protected] 1 Institute of Mobile Communications, Southwest Jiaotong University, Chengdu, Sichuan 610031, China Full list of author information is available at the end of the article
services at vehicular speeds beyond 120 km/h. Since the signal transmission under very high speed scenarios will inevitably experience serious deterioration, it is imperative to develop key broadband mobile communication techniques for such very high speed vehicles. This special issue aims at putting together the major achievements and developments in this field. There are 18 papers in this special issue, which have been organized into three thematic groups. The first group of five papers deal with the rapidly time-varying channel modeling and estimation, the next group of seven papers address data transmission under high mobility scenarios, and the last group of six papers are related to fast handover
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