Personal communication systems (PCS)

Li, V.O.K.; Qiu, Xianyang

doi:10.1109/5.406427

Cited by 128 publications

(44 citation statements)

References 141 publications

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“…Further important references are, for example, those by Rappaport [10] and Garg and Wilkes [11], or the compilation edited by Gibbson [12]. These developments are also portrayed in magazine special issues [13]- [18] and excellent reviews by McDonald [19], Steele [20]- [22], Cox [30], Li and Qiu [32], Kucar [31], etc. This paper attempts to provide an update on some of the subsystems and trends in the broad field of wireless multimedia communications.…”

Section: The Wireless Communications Scenementioning

confidence: 99%

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Bandwidth-efficient wireless multimedia communications

Hanzo

1998

Proc. IEEE

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Section: The Wireless Communications Scenementioning

confidence: 99%

“…This often leads to substantially increased user numbers' being supported by the system. A range of MAC protocols have been advocated in the literature [218]- [228], most of which were featured in a recent excellent overview by Li and Qiu in [32].…”

Section: B Multiple Accessmentioning

confidence: 99%

Bandwidth-efficient wireless multimedia communications

Hanzo

1998

Proc. IEEE

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“…Each filter is matched to one commutation signal. For illustrative purposes, it is assumed that the commutation signal set cantains four signaIs Malched 10 u, (1) Matched to U3(t)…”

Section: Commutation Signaling For Broadband Lndoor Wireless Communicmentioning

confidence: 99%

“…The continuing large-scale deployment of wireless access technologies, rapid advances in personal computing and wide-spread access to the information superhighway are market forces that are stimulating a demand for tetherless and ubiquitous access to a wide range of high-speed data communication services [1], [2]. These market forces are driving a convergence of wireless communications and broadband access technologies [3], [4].…”

Section: General Introductionmentioning

confidence: 99%

A SAW-based commutation signaling modem for broadband indoor wireless communication

Kipens

Leib²,

Saw³

et al. 1998

IEEE Trans. Ultrason., Ferroelect., Freq. Contr.

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This manuscript has been reproduced trom the microfilm master. U1v.1I films the teX! directly fram the original or copy submitted. Thus, sorne thesis and dissertation copies are in typewriter face, while others may be fram any type of computer printer.The quality of this reproduction is dependent upon the quality of the copy submitted. Broken or indistinct print, colored or poor quality illustrations and photographs, print bleedthrough, substandard margins, and improper alignment can adversely affect reproduction.In the unlikely event that the author did not send U1\fi a complete manuscript and there are missing pages, these will be noted. Also, if unauthorized copyright material had to be removed, a note will indicate the deletion.Oversize materials (e.g., maps, drawings, charts) are reproduced by sectioning the original, beginning at the upper left-hand corner and continuing from left to right in equal sections with small overlaps. Each original is aIso photographed in one exposure and is included in reduced fonn at the back ofthe book.Photographs included in the original manuscript have been reproduced xerographically in this copy. Higher quality &' x 9" black and white photographic prints are available for any photographs or illustrations appearing in this copy for an additional charge. Contact UMI directly to order. The author has granted a nonexclusive licence allowing the National Library of Canada to reproduce, loan, distribute or sell copies of this thesis in microform, paper or electronic formats. UMIThe author retains ownership of the copyright in this thesis. Neither the thesis nor substantial extracts frOID it may be printed or otherwise reproduced without the author' s permISSIon.L'auteur a accordé une licence non exclusive permettant à la Bibliothèque nationale du Canada de reproduire, prêter, distribuer ou vendre des copies de cette thèse sous la forme de microfiche/film, de reproduction sur papier ou sur format électronique.L'auteur conserve la propriété du droit d'auteur qui protège cette thèse. Ni la thèse ni des extraits substantiels de celle-ci ne doivent être imprimés ou autrement reproduits sans son autorisation.Commutation signaling is a bandwidth expanding modulation scheme that is robust to multipath induced intersymbol interference. Surface Acoustic Wave (SAW) technology is very suitable for implementing high.-speed commutation signaling modems. A SAW-based commutation signaling modem for broadband indoor wireless communication is described. The differential coherent detector is a key element since it performs IF matched filtering and differentially coherent demodulation of the received signaL A commutation signaling differential coherent detector has been implemented using SAW and analog silicon technologies. The bit rate is 40 Mb/s, the chip rate is 200 Mel s and the operating frequency (IF frequency) is 1 GHz. A multicarrier commutation signaling modem uses frequency-division multiplexed subcarriers to combine a number of lower rate bit streams in order to achieve high-rate data tra...

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“…Recent third-generation (3G) mobile research has been strongly motivated by the seminal contributions of Viterbi [17], while a range of European contributions were summarized in [18]. These advances have also been featured in the state-of-the-art collection of high-quality contributions edited by Glisic and Leppänen [19] and in various magazine special issues [20]- [24] and other review articles [25]. A range of further narrow-band multimedia system components were reviewed in [26], [27].…”

Section: A Introduction and Outlinementioning

confidence: 99%

Interactive cellular and cordless video telephony: State-of-the-art system design principles and expected performance

2000

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Second-generation (2G) mobile radio standards have not been designed with video communications in mind, although the employment of error-resilient, constant-bit-rate proprietary video codecs over these systems is realistic. The third-generation (3G) systems I. STATE-OF-THE-ART SYSTEM COMPONENT DEVELOPMENTS A. Introduction and OutlineThe subject of mobile radio communications has reached a state of maturity over the past two decades, as indicated by the excellent monographs by Jakes This contribution attempts to summarize a range of recent advances in the field of bandwidth-efficient wireless video communications. In this section, we commence our discourse with a brief overview of the wireless scene and, in particular, by considering the video transmission capabilities of the existing and future wireless systems. The geographical variation of the cellular channel capacity is characterized by Section II, as a motivation for invoking burst-by-burst adaptive transceivers [27]- [29]. The nature of co-channel interference (CCI)-which is the most dominant channel impairment in wireless systems-is the topic of Section III, where it is shown that the geographic variation of CCI justifies the employment of multimode transceivers, which are discussed in Section IV. Low-rate video compression aspects are reviewed in Section V, and the performance of the ITU H.263 codec is analyzed in some depth. Our discussions in Sections VI and VII are focused on the performance of reconfigurable video transceivers. Specifically, in Section VI, no power control is used-which is typically the case in cordless telephones, such as DECT and CT2-while in Section VII, power control is employed, which is characteristic of cellular systems, such as GSM [30], etc. Section VIII proposes a near-instantaneously adaptive or burst-by-burst adaptive code-division multiple-access (CDMA) scheme, which can be invoked in the context of the forthcoming 3G systems, in order to enhance their performance. Lastly, our discussions are concluded in Section IX with a range of system design guidelines. Let us now commence our overview of the range of existing and forthcoming wireless systems and their video transmission capabilities. B. Second-Generation (2G) Wireless SystemsThe existing 2G wireless systems now constitute a mature technology. Although they have not been designed with video communications in mind, with the advent of the specially designed error-resilient, fixed-rate video codecs [27]-[35] proposed by Streit et al., it is nonetheless realistic to provide videophone services over these low-rate schemes. For low-latency interactive videophony these systems have

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Personal communication systems (PCS)

Cited by 128 publications

References 141 publications

Bandwidth-efficient wireless multimedia communications

Bandwidth-efficient wireless multimedia communications

A SAW-based commutation signaling modem for broadband indoor wireless communication

Interactive cellular and cordless video telephony: State-of-the-art system design principles and expected performance

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