IEICE ESS:Technical Groups

Technical Committees


Technical Committee on Wideband Systems
	Japanese Page

The technical committee on wideband systems is a place for discussion on research results related to communications systems using wideband, such as spread spectrum (SS), code division multiple access (CDMA), orthogonal frequency division multiplexing (OFDM), and an ultra wideband (UWB), as a whole. By expanding the spectrum of signals, many additional values, such as high-speed data communications, tolerance of phasing, tolerance of disturbance, multiplexing by random access, are produced, and improvement in performance is achieved. Including code sequence design, communication methods, circuit technologies, electric wave propagation antenna technologies for the additional values and high performance, the technical committee treats deeply and widely from the theoretical analysis to experiments and applied technologies. The main fields are shown below.

-	Coding theories (diffusion codes constructing methods, combination with error correcting coding, etc.)
-	Communication methods / evaluation theories (design of various application systems, comparison, and evaluation with other methods, etc.)
-	Modulation and demodulation methods and theories (modulation and demodulation methods, modulation and demodulation circuits, modulation and demodulation devices, multi-carrier communication, time / space signal processing, etc.)
-	Synchronization methods and devices (synchronous circuits, synchronization methods, and devices for synchronization, etc.)
-	Multi access (combined use with CDMA (code division multiple access), SDMA (space division multi access), and TDMA and FDMA etc.)
-	Communication methods and related electric wave propagation, transmission line analysis, antenna technologies, input-and-output interface technologies
-	Various applicable fields (UWB-based public communications, personal communications, wireless LAN, power line communications, consumer communications, multimedia information communications, ITS (advanced traffic system), measurements / range-findings, software radio, optical CDMA, optical spatial processing, quantum information communications, OFDM, digital broadcasting, cable communications, xDSL, and UWB) and various boundary areas to which the same principles and phenomena are applicable.