Pub Date : 2008-10-24DOI: 10.1109/IWSSC.2008.4656782
C. Salas, I. Moreno, A. Yun, J. Gijon, A. Ramos
This paper presents the IPv6/IPv4 IPTV and Multiconference Unit trials performed within the frame of SATSIX, an EC funded IST FP6 project that deals with innovative techniques over transparent and meshed regenerative satellite networks.
{"title":"SATSIX IPv6/IPv4 IPTV and MCU trials: Results and analysis","authors":"C. Salas, I. Moreno, A. Yun, J. Gijon, A. Ramos","doi":"10.1109/IWSSC.2008.4656782","DOIUrl":"https://doi.org/10.1109/IWSSC.2008.4656782","url":null,"abstract":"This paper presents the IPv6/IPv4 IPTV and Multiconference Unit trials performed within the frame of SATSIX, an EC funded IST FP6 project that deals with innovative techniques over transparent and meshed regenerative satellite networks.","PeriodicalId":137382,"journal":{"name":"2008 IEEE International Workshop on Satellite and Space Communications","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116024238","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 : 2008-10-24DOI: 10.1109/IWSSC.2008.4656731
Songrith Kittiperachol, Zhili Sun, H. Cruickshank
The Internet has become an important part of day to day activities. There is hardly a day without using Internet, such as reading Emails and articles as well as enjoying music and video. Thus, it is very important for the Internet to be provided to anyone anywhere. Terrestrial network has been the underlying infrastructure for the Internet. However, terrestrial network by itself cannot always satisfy all of the growing demands for the Internet, particularly in the remote areas. Thus, the deployment of the Next Generation Satellite Network (NGSN) is needed to fill in the gap and break the digital divide. This paper evaluates how the performances of TCP over NGSN with dynamic bandwidth allocation mechanism. The TCP used in this work is a real-world TCP based on both Linux and Window Vista implementations which have been integrated into a network simulator, INET. The study reveals that the TCP performances in terms of utilization and robustness, friendliness and fairness, and userpsilas perceived Quality of Service are clearly affected by the dynamic bandwidth allocation mechanism.
{"title":"Evaluation of TCP variants and bandwidth on demand over Next Generation Satellite Network","authors":"Songrith Kittiperachol, Zhili Sun, H. Cruickshank","doi":"10.1109/IWSSC.2008.4656731","DOIUrl":"https://doi.org/10.1109/IWSSC.2008.4656731","url":null,"abstract":"The Internet has become an important part of day to day activities. There is hardly a day without using Internet, such as reading Emails and articles as well as enjoying music and video. Thus, it is very important for the Internet to be provided to anyone anywhere. Terrestrial network has been the underlying infrastructure for the Internet. However, terrestrial network by itself cannot always satisfy all of the growing demands for the Internet, particularly in the remote areas. Thus, the deployment of the Next Generation Satellite Network (NGSN) is needed to fill in the gap and break the digital divide. This paper evaluates how the performances of TCP over NGSN with dynamic bandwidth allocation mechanism. The TCP used in this work is a real-world TCP based on both Linux and Window Vista implementations which have been integrated into a network simulator, INET. The study reveals that the TCP performances in terms of utilization and robustness, friendliness and fairness, and userpsilas perceived Quality of Service are clearly affected by the dynamic bandwidth allocation mechanism.","PeriodicalId":137382,"journal":{"name":"2008 IEEE International Workshop on Satellite and Space Communications","volume":"107 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114562758","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 : 2008-10-24DOI: 10.1109/IWSSC.2008.4656732
Golam Sarwar, R. Boreli, Guillaume Jourjon, E. Lochin
We propose modifications in the TCP-Friendly Rate Control (TFRC) congestion control mechanism from the Datagram Congestion Control Protocol (DCCP) intended for use with real-time traffic, which are aimed at improving its performance for long delay (primarily satellite) links. Firstly, we propose an algorithm to optimise the number of feedback messages per round trip time (RTT) rather than use the currently standard of at least one per RTT, based on the observed link delay. We analyse the improvements achievable with proposed modification in different phases of congestion control and present results from simulations with modified ns-2 DCCP and live experiments using the modified DCCP Linux kernel implementation. We demonstrate that the changes results in improved slow start performance and a reduced data loss compared to standard DCCP, while the introduced overhead remains acceptable.
{"title":"Improvements in DCCP congestion control for satellite links","authors":"Golam Sarwar, R. Boreli, Guillaume Jourjon, E. Lochin","doi":"10.1109/IWSSC.2008.4656732","DOIUrl":"https://doi.org/10.1109/IWSSC.2008.4656732","url":null,"abstract":"We propose modifications in the TCP-Friendly Rate Control (TFRC) congestion control mechanism from the Datagram Congestion Control Protocol (DCCP) intended for use with real-time traffic, which are aimed at improving its performance for long delay (primarily satellite) links. Firstly, we propose an algorithm to optimise the number of feedback messages per round trip time (RTT) rather than use the currently standard of at least one per RTT, based on the observed link delay. We analyse the improvements achievable with proposed modification in different phases of congestion control and present results from simulations with modified ns-2 DCCP and live experiments using the modified DCCP Linux kernel implementation. We demonstrate that the changes results in improved slow start performance and a reduced data loss compared to standard DCCP, while the introduced overhead remains acceptable.","PeriodicalId":137382,"journal":{"name":"2008 IEEE International Workshop on Satellite and Space Communications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128720210","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 : 2008-10-24DOI: 10.1109/IWSSC.2008.4656768
N. Jegham, N. Girault, C. Le Guern, G. Roussel, S. Lohier, A. Beylot
DVB-S was initially targeting unidirectional services such as broadband TV broadcasting. DVB-S2, the newest evolution of the standard is rather packet delivery oriented. Together with an RCS return channel, it constitutes an improved network to convey IP based traffic. This paper addresses the issues relating to transporting voice over IP via a DVB-S2 link. Tests were performed on a real DVB-S2/RCS test bench part of the DVB-S2 experiment infrastructure. The standard flexibility, in comparison to DVB-S, to encapsulate different lengths of IP packets allowed acceptable performances. Through an efficient sizing of IP packets within a mixed traffic (voice and data) it is possible to improve encapsulation efficiency. In addition, a focus on the voice behaviour during fading event in an adaptive coding and modulation mode, showed acceptable quality.
{"title":"VoIP over a DVB-S2 ACM link","authors":"N. Jegham, N. Girault, C. Le Guern, G. Roussel, S. Lohier, A. Beylot","doi":"10.1109/IWSSC.2008.4656768","DOIUrl":"https://doi.org/10.1109/IWSSC.2008.4656768","url":null,"abstract":"DVB-S was initially targeting unidirectional services such as broadband TV broadcasting. DVB-S2, the newest evolution of the standard is rather packet delivery oriented. Together with an RCS return channel, it constitutes an improved network to convey IP based traffic. This paper addresses the issues relating to transporting voice over IP via a DVB-S2 link. Tests were performed on a real DVB-S2/RCS test bench part of the DVB-S2 experiment infrastructure. The standard flexibility, in comparison to DVB-S, to encapsulate different lengths of IP packets allowed acceptable performances. Through an efficient sizing of IP packets within a mixed traffic (voice and data) it is possible to improve encapsulation efficiency. In addition, a focus on the voice behaviour during fading event in an adaptive coding and modulation mode, showed acceptable quality.","PeriodicalId":137382,"journal":{"name":"2008 IEEE International Workshop on Satellite and Space Communications","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127374243","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 : 2008-10-24DOI: 10.1109/IWSSC.2008.4656796
Marco Gomes, Vitor Silva, F. Cercas, Martin Tomlinson
QAM and APSK are used to meet the ever growing demand for higher data rates in bandwidth limited satellite channels whose main constraint to communication capacity is a non-linear transmitting high power amplifier (HPA). The inherent APSK robustness against nonlinear distortion leads to its introduction in the recent standard for digital video broadcasting (DVB-S2). Power efficiency is still limited by high signal PAPR at the HPA input. Magnitude modulation is a technique for PAPR reduction, proposed with success for QPSK. This paper shows that it is possible to use the magnitude modulation concept for the 16-APSK case, even considering the huge number of symbol combinations. The methodpsilas capability to avoid phase modulation is improved. In order to reduce look-up table computation complexity and storage requirements, the constellation symbols are vector quantized. Constellation and RRC symmetries are also explored. Experimental results show considerable gains of 80% in back-off reduction.
{"title":"Low bBack-off 16-APSK transmission using magnitude modulation and symbol quantization","authors":"Marco Gomes, Vitor Silva, F. Cercas, Martin Tomlinson","doi":"10.1109/IWSSC.2008.4656796","DOIUrl":"https://doi.org/10.1109/IWSSC.2008.4656796","url":null,"abstract":"QAM and APSK are used to meet the ever growing demand for higher data rates in bandwidth limited satellite channels whose main constraint to communication capacity is a non-linear transmitting high power amplifier (HPA). The inherent APSK robustness against nonlinear distortion leads to its introduction in the recent standard for digital video broadcasting (DVB-S2). Power efficiency is still limited by high signal PAPR at the HPA input. Magnitude modulation is a technique for PAPR reduction, proposed with success for QPSK. This paper shows that it is possible to use the magnitude modulation concept for the 16-APSK case, even considering the huge number of symbol combinations. The methodpsilas capability to avoid phase modulation is improved. In order to reduce look-up table computation complexity and storage requirements, the constellation symbols are vector quantized. Constellation and RRC symmetries are also explored. Experimental results show considerable gains of 80% in back-off reduction.","PeriodicalId":137382,"journal":{"name":"2008 IEEE International Workshop on Satellite and Space Communications","volume":"74 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121272014","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 : 2008-10-24DOI: 10.1109/IWSSC.2008.4656745
A. Yun, C. Salas, A. Iuoras, M. Lambert
This paper introduces the standardization work on C2P (Connection Control Protocol), carried on in the frame of ETSI SES BSM working group. As a first step, this work has defined a C2P solution for dynamic connectivity and QoS control in all types of DVB-RCS satellite networks.
介绍了在ETSI SES BSM工作组框架下进行的C2P (Connection Control Protocol，连接控制协议)标准化工作。作为第一步，这项工作已经为所有类型的DVB-RCS卫星网络的动态连接和QoS控制定义了一个C2P解决方案。
{"title":"C2P standardization work in ETSI SES BSM","authors":"A. Yun, C. Salas, A. Iuoras, M. Lambert","doi":"10.1109/IWSSC.2008.4656745","DOIUrl":"https://doi.org/10.1109/IWSSC.2008.4656745","url":null,"abstract":"This paper introduces the standardization work on C2P (Connection Control Protocol), carried on in the frame of ETSI SES BSM working group. As a first step, this work has defined a C2P solution for dynamic connectivity and QoS control in all types of DVB-RCS satellite networks.","PeriodicalId":137382,"journal":{"name":"2008 IEEE International Workshop on Satellite and Space Communications","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126146603","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 : 2008-10-24DOI: 10.1109/IWSSC.2008.4656753
H. Cruz-Sanchez, L. Franck, A. Beylot
Routing policies in traditional networks are based on interactive mechanisms that consider a permanent simultaneous communication between the source and the destination nodes. In addition, the metrics associated to these networks (throughput, end-to-end delay, jitter, etc.) are based on this assumption. Systems deployed in challenging environments are faced to intermittent connectivity as a consequence of environmental conditions, mobility or equipment failure. The delay tolerant network (DTN) architecture [1], [2], based on store and forward (S&F) mechanisms is designed to accommodate these conditions. As traditional metrics can not be used for characterizing routes in this kind of networks, a framework of new S&F metrics has been proposed in [3]. In this paper, we present an algorithm to compute routes in a deterministic S&F system made of a low earth orbit (LEO) satellite constellation. Three different routing policies are applied depending on the offered services. The results show the interest of S&F metrics for service-oriented routing policies.
{"title":"Use of store and forward metrics for service-oriented routing in satellite constellations","authors":"H. Cruz-Sanchez, L. Franck, A. Beylot","doi":"10.1109/IWSSC.2008.4656753","DOIUrl":"https://doi.org/10.1109/IWSSC.2008.4656753","url":null,"abstract":"Routing policies in traditional networks are based on interactive mechanisms that consider a permanent simultaneous communication between the source and the destination nodes. In addition, the metrics associated to these networks (throughput, end-to-end delay, jitter, etc.) are based on this assumption. Systems deployed in challenging environments are faced to intermittent connectivity as a consequence of environmental conditions, mobility or equipment failure. The delay tolerant network (DTN) architecture [1], [2], based on store and forward (S&F) mechanisms is designed to accommodate these conditions. As traditional metrics can not be used for characterizing routes in this kind of networks, a framework of new S&F metrics has been proposed in [3]. In this paper, we present an algorithm to compute routes in a deterministic S&F system made of a low earth orbit (LEO) satellite constellation. Three different routing policies are applied depending on the offered services. The results show the interest of S&F metrics for service-oriented routing policies.","PeriodicalId":137382,"journal":{"name":"2008 IEEE International Workshop on Satellite and Space Communications","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128070966","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 : 2008-10-24DOI: 10.1109/IWSSC.2008.4656778
P. Thevenon, Michel Bousquet, C. Macabiau, T. Grelier, L. Ries, Daniel Roviras
With the increase of global satellite navigation systems (GNSS) in a limited number of frequency bands, the current spectrum dedicated to satellite navigation encounters congestion. A possible path to keep modernizing the different GNSS is to find new frequency bands where a satellite radio-navigation service (RNSS) could be provided. This article takes a regulatory approach to identify potential candidate bands, which are then reviewed in detail to assess their usability for a new RNSS deployment. The results of this analysis are: (1) there exist spaces in the spectrum where a RNSS allocation exists or could be added. For example, the option consisting in adding another RNSS allocation into aeronautical radio-navigation service (ARNS) bands. However, such allocation change is not planned and would require important commitment from administrations and long negotiations with the civil aviation community; (2) the use of telecommunication signals of opportunity coming from an hybrid satellite-terrestrial network of emitters. Among these solutions, some would permit to combine navigation and telecommunication services, offering a huge opportunity for mass market application.
{"title":"Regulatory analysis of potential candidate bands for the modernisation of GNSS systems in 2015–2020","authors":"P. Thevenon, Michel Bousquet, C. Macabiau, T. Grelier, L. Ries, Daniel Roviras","doi":"10.1109/IWSSC.2008.4656778","DOIUrl":"https://doi.org/10.1109/IWSSC.2008.4656778","url":null,"abstract":"With the increase of global satellite navigation systems (GNSS) in a limited number of frequency bands, the current spectrum dedicated to satellite navigation encounters congestion. A possible path to keep modernizing the different GNSS is to find new frequency bands where a satellite radio-navigation service (RNSS) could be provided. This article takes a regulatory approach to identify potential candidate bands, which are then reviewed in detail to assess their usability for a new RNSS deployment. The results of this analysis are: (1) there exist spaces in the spectrum where a RNSS allocation exists or could be added. For example, the option consisting in adding another RNSS allocation into aeronautical radio-navigation service (ARNS) bands. However, such allocation change is not planned and would require important commitment from administrations and long negotiations with the civil aviation community; (2) the use of telecommunication signals of opportunity coming from an hybrid satellite-terrestrial network of emitters. Among these solutions, some would permit to combine navigation and telecommunication services, offering a huge opportunity for mass market application.","PeriodicalId":137382,"journal":{"name":"2008 IEEE International Workshop on Satellite and Space Communications","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131525555","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 : 2008-10-24DOI: 10.1109/IWSSC.2008.4656760
N. Jeannin, L. Castanet, J. Lemorton, L. Feral, H. Sauvageot, F. Lacoste
As the impairments due to rain on the propagation channel for frequency bands such as Ka or Q/V have to be compensated by adaptive fade mitigation techniques, optimized radio resource management needs to be implemented, which requires a coarse knowledge of spatio-temporal dynamic of the attenuation due to rain. In this paper a model able to emulate the space-time dynamic of the attenuation due to rain on a satellite coverage is presented. It consists of a stochastic model that is constrained by the outputs of a reanalysis model. The spatial resolution of the modeling is of 1 km and the temporal one of 0.1 h. A stochastic interpolation model is then used to get a temporal resolution of 1s more suitable to study fade dynamic.
{"title":"A large scale, high resolution channel model for propagation impairment techniques design and optimization","authors":"N. Jeannin, L. Castanet, J. Lemorton, L. Feral, H. Sauvageot, F. Lacoste","doi":"10.1109/IWSSC.2008.4656760","DOIUrl":"https://doi.org/10.1109/IWSSC.2008.4656760","url":null,"abstract":"As the impairments due to rain on the propagation channel for frequency bands such as Ka or Q/V have to be compensated by adaptive fade mitigation techniques, optimized radio resource management needs to be implemented, which requires a coarse knowledge of spatio-temporal dynamic of the attenuation due to rain. In this paper a model able to emulate the space-time dynamic of the attenuation due to rain on a satellite coverage is presented. It consists of a stochastic model that is constrained by the outputs of a reanalysis model. The spatial resolution of the modeling is of 1 km and the temporal one of 0.1 h. A stochastic interpolation model is then used to get a temporal resolution of 1s more suitable to study fade dynamic.","PeriodicalId":137382,"journal":{"name":"2008 IEEE International Workshop on Satellite and Space Communications","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131830769","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 : 2008-10-24DOI: 10.1109/IWSSC.2008.4656798
S. Papaharalabos, P. Mathiopoulos, G. Tsiropoula, P. Constantinou, D. Benmayor
This paper presents a systematic rate-compatible (RC) irregular repeat-accumulate (IRA) low-density parity check (LDPC) family of codes for digital video broadcasting-satellite to handheld (DVB-SH) applications. Puncturing and extending of an optimized IRA mother code of rate 1/3 are used to obtain the full range of code rates. The main contribution of this paper is a simple, yet memory-efficient and modular, extending algorithm to obtain the lower code rates, based on a truncated Vandermonde matrix. In contrast to previously published extending methods, the one introduced in this paper does not use density evolution analysis, but instead achieves lower rate codes up to 1/5, by employing solely circulants and identity matrices in a deterministic structure. Compared to the standardized 3rd generation partnership project 2 (3GPP2) turbo codes, the proposed RC-IRA codes feature lower complexity decoding, that is beneficial from processing, power and memory constrained handheld devices. The performance of the proposed family of codes is evaluated for the additive white Gaussian noise (AWGN) channel with information block length k = 12282 bits. Computer simulation results demonstrate that, for a wide range of rates, the proposed RC-IRA family of codes performs very close to the 3GPP2 turbo codes, and outperforms the 3GPP2 turbo codes when the latter exhibit an error-floor at FER below 10-3 and at at BER below 10-5, apart from the case of rate R=1/5.
{"title":"Rate-compatible irregular repeat-accumulate codes for DVB-SH applications","authors":"S. Papaharalabos, P. Mathiopoulos, G. Tsiropoula, P. Constantinou, D. Benmayor","doi":"10.1109/IWSSC.2008.4656798","DOIUrl":"https://doi.org/10.1109/IWSSC.2008.4656798","url":null,"abstract":"This paper presents a systematic rate-compatible (RC) irregular repeat-accumulate (IRA) low-density parity check (LDPC) family of codes for digital video broadcasting-satellite to handheld (DVB-SH) applications. Puncturing and extending of an optimized IRA mother code of rate 1/3 are used to obtain the full range of code rates. The main contribution of this paper is a simple, yet memory-efficient and modular, extending algorithm to obtain the lower code rates, based on a truncated Vandermonde matrix. In contrast to previously published extending methods, the one introduced in this paper does not use density evolution analysis, but instead achieves lower rate codes up to 1/5, by employing solely circulants and identity matrices in a deterministic structure. Compared to the standardized 3rd generation partnership project 2 (3GPP2) turbo codes, the proposed RC-IRA codes feature lower complexity decoding, that is beneficial from processing, power and memory constrained handheld devices. The performance of the proposed family of codes is evaluated for the additive white Gaussian noise (AWGN) channel with information block length k = 12282 bits. Computer simulation results demonstrate that, for a wide range of rates, the proposed RC-IRA family of codes performs very close to the 3GPP2 turbo codes, and outperforms the 3GPP2 turbo codes when the latter exhibit an error-floor at FER below 10-3 and at at BER below 10-5, apart from the case of rate R=1/5.","PeriodicalId":137382,"journal":{"name":"2008 IEEE International Workshop on Satellite and Space Communications","volume":"72 12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116564473","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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