Pub Date : 1996-02-19DOI: 10.1109/ICPWC.1996.494271
A. Krishnakumar
A majority of applications in the near-future are expected to be multimedia-capable. One of the enabling technologies for this to happen is asynchronous transfer mode (ATM) networking. In addition, the exploding use of mobile terminals-laptop computers, personal digital assistants (PDAs) etc.-means there will be more demand to extend these multimedia-capable applications to the mobile terminal. This requires the extension of ATM technology to high-speed wireless communications (>20 Mbps). This is an active area of research around the world. This article describes the technical challenges posed by wireless ATM networking and gives an overview of wireless ATM efforts under way, focusing on specific research projects in the USA and Europe.
{"title":"ATM without strings: an overview of wireless ATM","authors":"A. Krishnakumar","doi":"10.1109/ICPWC.1996.494271","DOIUrl":"https://doi.org/10.1109/ICPWC.1996.494271","url":null,"abstract":"A majority of applications in the near-future are expected to be multimedia-capable. One of the enabling technologies for this to happen is asynchronous transfer mode (ATM) networking. In addition, the exploding use of mobile terminals-laptop computers, personal digital assistants (PDAs) etc.-means there will be more demand to extend these multimedia-capable applications to the mobile terminal. This requires the extension of ATM technology to high-speed wireless communications (>20 Mbps). This is an active area of research around the world. This article describes the technical challenges posed by wireless ATM networking and gives an overview of wireless ATM efforts under way, focusing on specific research projects in the USA and Europe.","PeriodicalId":117877,"journal":{"name":"1996 IEEE International Conference on Personal Wireless Communications Proceedings and Exhibition. Future Access","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130260592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1996-02-19DOI: 10.1109/ICPWC.1996.493334
W. Holubowicz
The key characteristic features of such pan-European wireless communication standards as GSM (cellular systems), DECT (cordless telephony), TETRA (trunking), ERMES (paging), TFTS (air-plane systems), HIPERLAN (wireless LANs), are described. The main applications for each standard are indicated and the current market situation corresponding to their stage of deployment is discussed.
{"title":"1990s-the decade of pan-European digital standards in wireless communications","authors":"W. Holubowicz","doi":"10.1109/ICPWC.1996.493334","DOIUrl":"https://doi.org/10.1109/ICPWC.1996.493334","url":null,"abstract":"The key characteristic features of such pan-European wireless communication standards as GSM (cellular systems), DECT (cordless telephony), TETRA (trunking), ERMES (paging), TFTS (air-plane systems), HIPERLAN (wireless LANs), are described. The main applications for each standard are indicated and the current market situation corresponding to their stage of deployment is discussed.","PeriodicalId":117877,"journal":{"name":"1996 IEEE International Conference on Personal Wireless Communications Proceedings and Exhibition. Future Access","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114964225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1996-02-19DOI: 10.1109/ICPWC.1996.493322
S. Kandiyoor, P. van de Berg, S. Blomstergren
Digital Enhanced Cordless Telecommunications (DECT), is a powerful and comprehensive standard capable of addressing multiple applications. The base standards were completed in 1992, and the first products became available during 1993. The early products were for the business and the residential markets; later products for cordless LANs, local loop and public mobility applications were being developed. This paper presents the DECT standard and different applications that can benefit the operator and the user.
{"title":"DECT: Meeting needs and creating opportunities for public network operators","authors":"S. Kandiyoor, P. van de Berg, S. Blomstergren","doi":"10.1109/ICPWC.1996.493322","DOIUrl":"https://doi.org/10.1109/ICPWC.1996.493322","url":null,"abstract":"Digital Enhanced Cordless Telecommunications (DECT), is a powerful and comprehensive standard capable of addressing multiple applications. The base standards were completed in 1992, and the first products became available during 1993. The early products were for the business and the residential markets; later products for cordless LANs, local loop and public mobility applications were being developed. This paper presents the DECT standard and different applications that can benefit the operator and the user.","PeriodicalId":117877,"journal":{"name":"1996 IEEE International Conference on Personal Wireless Communications Proceedings and Exhibition. Future Access","volume":"127 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116211961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1996-02-19DOI: 10.1109/ICPWC.1996.494284
S. Madan, C. G. Englefield, P. Goud
A decision-aided error correction algorithm is described and evaluated. The receiver based on this algorithm is tested experimentally in real time using a digital signal processor. Its performance is evaluated for a signal based on the North American cellular standard, transmitted over a Rayleigh flat fading channel. The test results show that the algorithm significantly reduces the irreducible error floor. Under adequate SNR conditions, this method of error correction is quite attractive compared to other techniques such as coding, insertion of pilot symbols, or the diversity method, because it requires no overhead bits. Also, since the algorithm does not require any modification to the frame structure of the signal, it may be preferred if the transmitting signal format has already been standardized.
{"title":"Real-time implementation of a decision-aided error correction algorithm for digital cellular radio","authors":"S. Madan, C. G. Englefield, P. Goud","doi":"10.1109/ICPWC.1996.494284","DOIUrl":"https://doi.org/10.1109/ICPWC.1996.494284","url":null,"abstract":"A decision-aided error correction algorithm is described and evaluated. The receiver based on this algorithm is tested experimentally in real time using a digital signal processor. Its performance is evaluated for a signal based on the North American cellular standard, transmitted over a Rayleigh flat fading channel. The test results show that the algorithm significantly reduces the irreducible error floor. Under adequate SNR conditions, this method of error correction is quite attractive compared to other techniques such as coding, insertion of pilot symbols, or the diversity method, because it requires no overhead bits. Also, since the algorithm does not require any modification to the frame structure of the signal, it may be preferred if the transmitting signal format has already been standardized.","PeriodicalId":117877,"journal":{"name":"1996 IEEE International Conference on Personal Wireless Communications Proceedings and Exhibition. Future Access","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131958905","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1996-02-19DOI: 10.1109/ICPWC.1996.494265
S. Purkayastha, R. Ramamoorthy, V. Tyagi
Personal communication services (PCS) enables each user to participate in a user defined set of subscribed services. The user can initiate and receive calls on the basis of a unique, personal, network transparent personal telecommunications number across multiple networks, public and private, at any terminal, fixed or mobile, irrespective of geographic location. PCS usage is limited only by terminal and network capabilities and restrictions by the network provider. The entire service is highly personalised. The variety and the quality of services make PCS distinct from other telecom services. What distinguishes one PCS service provider from the other is the quality of the response that the users get each time they interact with the service provider's organisation. A good customer care and billing system (CCBS) is the key to providing such a high quality of response.
{"title":"Customer care and billing-service differentiator in PCS","authors":"S. Purkayastha, R. Ramamoorthy, V. Tyagi","doi":"10.1109/ICPWC.1996.494265","DOIUrl":"https://doi.org/10.1109/ICPWC.1996.494265","url":null,"abstract":"Personal communication services (PCS) enables each user to participate in a user defined set of subscribed services. The user can initiate and receive calls on the basis of a unique, personal, network transparent personal telecommunications number across multiple networks, public and private, at any terminal, fixed or mobile, irrespective of geographic location. PCS usage is limited only by terminal and network capabilities and restrictions by the network provider. The entire service is highly personalised. The variety and the quality of services make PCS distinct from other telecom services. What distinguishes one PCS service provider from the other is the quality of the response that the users get each time they interact with the service provider's organisation. A good customer care and billing system (CCBS) is the key to providing such a high quality of response.","PeriodicalId":117877,"journal":{"name":"1996 IEEE International Conference on Personal Wireless Communications Proceedings and Exhibition. Future Access","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125448770","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1996-02-19DOI: 10.1109/ICPWC.1996.494266
S. S. Anand, K. Kasturi, G. Sriram
This paper elaborates on the accounting architecture described in the cellular digital packet data (CDPD) standard and implemented in a product release. Accounting here pertains to the collection and distribution of subscriber usage data which could be used for statistical or billing purposes. Addressing billing issues is beyond the scope of this paper. The CDPD standard has addressed a number of key issues arising in providing an accounting service for cellular networks which can be of interest to the entire cellular community. These include issues of inter-service provider visiting. Protocols for the exchange of accounting data between multiple service providers are also discussed. This paper highlights some of the key elements of the CDPD accounting architecture that can be adopted for specifying a generic architecture for cellular voice networks. Accounting support for virtual private networks within the framework of this architecture is also discussed.
{"title":"Accounting architecture for cellular networks","authors":"S. S. Anand, K. Kasturi, G. Sriram","doi":"10.1109/ICPWC.1996.494266","DOIUrl":"https://doi.org/10.1109/ICPWC.1996.494266","url":null,"abstract":"This paper elaborates on the accounting architecture described in the cellular digital packet data (CDPD) standard and implemented in a product release. Accounting here pertains to the collection and distribution of subscriber usage data which could be used for statistical or billing purposes. Addressing billing issues is beyond the scope of this paper. The CDPD standard has addressed a number of key issues arising in providing an accounting service for cellular networks which can be of interest to the entire cellular community. These include issues of inter-service provider visiting. Protocols for the exchange of accounting data between multiple service providers are also discussed. This paper highlights some of the key elements of the CDPD accounting architecture that can be adopted for specifying a generic architecture for cellular voice networks. Accounting support for virtual private networks within the framework of this architecture is also discussed.","PeriodicalId":117877,"journal":{"name":"1996 IEEE International Conference on Personal Wireless Communications Proceedings and Exhibition. Future Access","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127289559","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1996-02-19DOI: 10.1109/ICPWC.1996.493335
Soon-Sung Yang
This paper present the architecture of the protocol analyzer, simulator, and tester (PAST) which can be used for the protocol compatibility test of the CDMA mobile system (CMS). The PAST is also applicable to the protocol compatibility test for a general communication system. The PAST has some special features such as a multiprocessing kernel, multi-scenario handling to simulate more than one system simultaneously. These features are very useful for testing category soft-handoff, multi-party call, etc., in the CMS.
{"title":"Protocol compatibility tester for CDMA mobile system (CMS)","authors":"Soon-Sung Yang","doi":"10.1109/ICPWC.1996.493335","DOIUrl":"https://doi.org/10.1109/ICPWC.1996.493335","url":null,"abstract":"This paper present the architecture of the protocol analyzer, simulator, and tester (PAST) which can be used for the protocol compatibility test of the CDMA mobile system (CMS). The PAST is also applicable to the protocol compatibility test for a general communication system. The PAST has some special features such as a multiprocessing kernel, multi-scenario handling to simulate more than one system simultaneously. These features are very useful for testing category soft-handoff, multi-party call, etc., in the CMS.","PeriodicalId":117877,"journal":{"name":"1996 IEEE International Conference on Personal Wireless Communications Proceedings and Exhibition. Future Access","volume":"55 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114130414","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1996-02-19DOI: 10.1109/ICPWC.1996.494277
S. Ponnekanti, S. Sali
In electromagnetically crowded mobile communication systems, an adaptive antenna employed at the base station often experience simultaneous reception of co-channel and impulsive interferers impinging into the main beam of the array along with the desired signal. This results in the performance degradation of the angle of arrival estimation schemes in supplying the accurate look-direction information to the beamformer. An effective adaptive antenna scheme is devised to prevent the desired signal cancellation in the optimal weight vector computation of the beamformer without resorting to the derivative or other higher order constraints in the angular region of interest.
{"title":"Application of antenna arrays for spatial separation in wireless systems","authors":"S. Ponnekanti, S. Sali","doi":"10.1109/ICPWC.1996.494277","DOIUrl":"https://doi.org/10.1109/ICPWC.1996.494277","url":null,"abstract":"In electromagnetically crowded mobile communication systems, an adaptive antenna employed at the base station often experience simultaneous reception of co-channel and impulsive interferers impinging into the main beam of the array along with the desired signal. This results in the performance degradation of the angle of arrival estimation schemes in supplying the accurate look-direction information to the beamformer. An effective adaptive antenna scheme is devised to prevent the desired signal cancellation in the optimal weight vector computation of the beamformer without resorting to the derivative or other higher order constraints in the angular region of interest.","PeriodicalId":117877,"journal":{"name":"1996 IEEE International Conference on Personal Wireless Communications Proceedings and Exhibition. Future Access","volume":"2014 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121599925","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1996-02-19DOI: 10.1109/ICPWC.1996.493340
D. Anvekar, Sandeep Pradhan
A new scheme for increasing handover success rate in mobile cellular systems is presented. The scheme involves exchange of channels between two mobiles which are moving in opposite directions across the handover area of adjacent cells. Performance evaluation of the new scheme in comparison with the conventional no-channel-exchange scheme is carried out by computer simulation of call traffic in two different two-cell models.
{"title":"HCE: A new channel exchange scheme for handovers in mobile cellular systems","authors":"D. Anvekar, Sandeep Pradhan","doi":"10.1109/ICPWC.1996.493340","DOIUrl":"https://doi.org/10.1109/ICPWC.1996.493340","url":null,"abstract":"A new scheme for increasing handover success rate in mobile cellular systems is presented. The scheme involves exchange of channels between two mobiles which are moving in opposite directions across the handover area of adjacent cells. Performance evaluation of the new scheme in comparison with the conventional no-channel-exchange scheme is carried out by computer simulation of call traffic in two different two-cell models.","PeriodicalId":117877,"journal":{"name":"1996 IEEE International Conference on Personal Wireless Communications Proceedings and Exhibition. Future Access","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117003608","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1996-02-19DOI: 10.1109/ICPWC.1996.494278
A. Chandra
The results from propagation measurements, conducted in an indoor building environment at 900 and 450 MHz are presented. The distance dependance of the received signal power in an LOS condition along the corridor of the second floor of an institute building was obtained. The indoor channel characteristics for the two frequencies are compared by an evaluation of the experimental and simulated received signal power. The computer simulated data were obtained for the RMS delay spread and coherence bandwidth.
{"title":"Comparative study of 900 MHz and 450 MHz radio signals propagation in an indoor environment","authors":"A. Chandra","doi":"10.1109/ICPWC.1996.494278","DOIUrl":"https://doi.org/10.1109/ICPWC.1996.494278","url":null,"abstract":"The results from propagation measurements, conducted in an indoor building environment at 900 and 450 MHz are presented. The distance dependance of the received signal power in an LOS condition along the corridor of the second floor of an institute building was obtained. The indoor channel characteristics for the two frequencies are compared by an evaluation of the experimental and simulated received signal power. The computer simulated data were obtained for the RMS delay spread and coherence bandwidth.","PeriodicalId":117877,"journal":{"name":"1996 IEEE International Conference on Personal Wireless Communications Proceedings and Exhibition. Future Access","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115677029","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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