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SympoTIC'03. Joint 1st Workshop on Mobile Future and Symposium on Trends in Communications最新文献

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Finite field Fourier transformation based on factor graph and its application to Reed Solomon codes 基于因子图的有限域傅里叶变换及其在Reed Solomon码中的应用
SympoTIC'03. Joint 1st Workshop on Mobile Future and Symposium on Trends in Communications Pub Date : 2003-12-03 DOI: 10.1109/TIC.2003.1249089
P. Forgac, P. Farkaš
{"title":"Finite field Fourier transformation based on factor graph and its application to Reed Solomon codes","authors":"P. Forgac, P. Farkaš","doi":"10.1109/TIC.2003.1249089","DOIUrl":"https://doi.org/10.1109/TIC.2003.1249089","url":null,"abstract":"A factor graph realization of the finite field Fourier transformation (FFFT) is presented, which could be used during encoding or decoding procedures for Reed Solomon codes. Complexity evaluation and its comparison with fast FFFT is given as well.","PeriodicalId":177770,"journal":{"name":"SympoTIC'03. Joint 1st Workshop on Mobile Future and Symposium on Trends in Communications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129505475","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}
引用次数: 0
Computational intelligence in call admission control 呼叫接纳控制中的计算智能
SympoTIC'03. Joint 1st Workshop on Mobile Future and Symposium on Trends in Communications Pub Date : 2003-12-03 DOI: 10.1109/TIC.2003.1249097
J. Goril, E. Dobos, A. Cizmar
{"title":"Computational intelligence in call admission control","authors":"J. Goril, E. Dobos, A. Cizmar","doi":"10.1109/TIC.2003.1249097","DOIUrl":"https://doi.org/10.1109/TIC.2003.1249097","url":null,"abstract":"The paper discusses the call admission control problem from a computational point of view. The use of various mathematical approaches to solving the call admission control problem is described, namely the use of the Markov decision process, neural nets, fuzzy logic and genetic algorithms. All these approaches are explained as used with a guard channel policy.","PeriodicalId":177770,"journal":{"name":"SympoTIC'03. Joint 1st Workshop on Mobile Future and Symposium on Trends in Communications","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114801826","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}
引用次数: 6
An improved second-order power control iterative algorithm 一种改进的二阶功率控制迭代算法
SympoTIC'03. Joint 1st Workshop on Mobile Future and Symposium on Trends in Communications Pub Date : 2003-12-03 DOI: 10.1109/TIC.2003.1249103
Linjun Wu, Shihua Zhu, Xing-le Feng
{"title":"An improved second-order power control iterative algorithm","authors":"Linjun Wu, Shihua Zhu, Xing-le Feng","doi":"10.1109/TIC.2003.1249103","DOIUrl":"https://doi.org/10.1109/TIC.2003.1249103","url":null,"abstract":"The paper proposes an improved second-order power control (ISOPC) algorithm for code division multiple access (CDMA) systems. The ISOPC uses current and previous power levels for power updates and it has fast convergence speed. Convergence analysis is performed and the condition of ISOPC convergence is provided for feasible systems. The ISOPC algorithm is then simulated in a DS-CDMA system. The results indicate that the new algorithm has faster convergence speed compared to the SOPC algorithm.","PeriodicalId":177770,"journal":{"name":"SympoTIC'03. Joint 1st Workshop on Mobile Future and Symposium on Trends in Communications","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123210203","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}
引用次数: 1
QoS-aware power minimization for OFDM-based radio systems 基于ofdm的无线电系统qos感知功率最小化
SympoTIC'03. Joint 1st Workshop on Mobile Future and Symposium on Trends in Communications Pub Date : 2003-12-03 DOI: 10.1109/TIC.2003.1249102
M. Minto, Diego Ragazzi, L. Agarossi, Luca Giangaspero
{"title":"QoS-aware power minimization for OFDM-based radio systems","authors":"M. Minto, Diego Ragazzi, L. Agarossi, Luca Giangaspero","doi":"10.1109/TIC.2003.1249102","DOIUrl":"https://doi.org/10.1109/TIC.2003.1249102","url":null,"abstract":"The requirement for high-performance, flexible, QoS-aware, low-power digital transceivers is one of the key challenges for future mobile/wireless systems. Within this framework, a reduced-complexity algorithm for fast, joint optimization of the transmission parameters in OFDM indoor wireless systems is proposed. The algorithm, based on the subcarrier switching concept, is handled by the \"supervisor\" unit that is the basic processing and control unit of any adaptive and reconfigurable system, meant to perform, in real-time, a predefined system optimization. The proposed algorithm dynamically determines the modulation and channel coding parameters for an OFDM-based system operating in frequency selective environments. Based on the channel state information, the algorithm selects the transmission parameters that guarantee the required QoS (bit rate and BER) with the minimum transmission power.","PeriodicalId":177770,"journal":{"name":"SympoTIC'03. Joint 1st Workshop on Mobile Future and Symposium on Trends in Communications","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125465739","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}
引用次数: 0
Analysis of different UWB systems with timing jitter and ISI in AWGN channel AWGN信道中具有时序抖动和ISI的不同UWB系统分析
SympoTIC'03. Joint 1st Workshop on Mobile Future and Symposium on Trends in Communications Pub Date : 2003-12-03 DOI: 10.1109/TIC.2003.1249087
J. Forgač, P. Farkaš
{"title":"Analysis of different UWB systems with timing jitter and ISI in AWGN channel","authors":"J. Forgač, P. Farkaš","doi":"10.1109/TIC.2003.1249087","DOIUrl":"https://doi.org/10.1109/TIC.2003.1249087","url":null,"abstract":"Three different UWB systems are proposed, based on BPNRZ Hadamard sequences and Hermitian pulses. The comparison of those systems is made in the AWGN channel with ISI and timing jitter.","PeriodicalId":177770,"journal":{"name":"SympoTIC'03. Joint 1st Workshop on Mobile Future and Symposium on Trends in Communications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124379725","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}
引用次数: 7
Performance analysis of binary-CDMA transceivers in AWGN channel AWGN信道下二进制cdma收发器性能分析
SympoTIC'03. Joint 1st Workshop on Mobile Future and Symposium on Trends in Communications Pub Date : 2003-12-03 DOI: 10.1109/TIC.2003.1249082
J. Ko, Yong-Hwan Lee
{"title":"Performance analysis of binary-CDMA transceivers in AWGN channel","authors":"J. Ko, Yong-Hwan Lee","doi":"10.1109/TIC.2003.1249082","DOIUrl":"https://doi.org/10.1109/TIC.2003.1249082","url":null,"abstract":"In binary CDMA (B-CDMA) schemes, the envelope of multiple CDMA signals is quantized into a small number of levels to minimize power amplifier burden while keeping the advantages of CDMA such as the soft capacity and robustness to interference. The performance of the B-CDMA system is analytically evaluated in the additive white Gaussian noise channel (AWGN). The performance of the B-CDMA system is mainly limited by two types of noise. One is truncation noise, due to truncation of the signal into a finite level and the other is the noise due to chip error. Finally, the analytical results are verified by computer simulation.","PeriodicalId":177770,"journal":{"name":"SympoTIC'03. Joint 1st Workshop on Mobile Future and Symposium on Trends in Communications","volume":"184 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125837884","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}
引用次数: 2
Reduced complexity software AM radio 降低了软件调幅收音机的复杂性
SympoTIC'03. Joint 1st Workshop on Mobile Future and Symposium on Trends in Communications Pub Date : 2003-12-03 DOI: 10.1109/TIC.2003.1249104
D. Iancu, J. Glossner, H. Ye, Youssef Abdelila, S. Stanley
{"title":"Reduced complexity software AM radio","authors":"D. Iancu, J. Glossner, H. Ye, Youssef Abdelila, S. Stanley","doi":"10.1109/TIC.2003.1249104","DOIUrl":"https://doi.org/10.1109/TIC.2003.1249104","url":null,"abstract":"Despite the fact that the AM receiver is nearly a century old, software implementations have been cost prohibitive. Currently, AM receivers are implemented in hardware (HW), employing AM/FM low cost chips. However, in a multiprotocol communication handheld device, the HW implementation becomes less attractive due to extra chip costs and the PC board area. The most attractive alternative for multiprotocol communication devices is provided by software defined radios (SDR). SDR is able to execute multiple communication protocols on the same processor, provided RF front ends are available to receive the transmission bands. As processor capabilities evolve to higher performance, the border between analog and digital components moves closer to the antenna, reducing the number of analog chip components. We present a low complexity implementation of an AM receiver using few HW components. The radio is based on a software defined communications baseband processor designed by Sandbridge Technologies. The device is intended to be used for handheld applications such as in mobile phones and PDAs. In our implementation, all functions associated with the AM receiver, including most of the filtering and demodulation, are executed in SW using two threads of the Sandbridge Technologies SB9600 multithreaded processor.","PeriodicalId":177770,"journal":{"name":"SympoTIC'03. Joint 1st Workshop on Mobile Future and Symposium on Trends in Communications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126090706","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}
引用次数: 5
Performances analysis of the WCDMA downlink channel WCDMA下行信道性能分析
SympoTIC'03. Joint 1st Workshop on Mobile Future and Symposium on Trends in Communications Pub Date : 2003-10-26 DOI: 10.1109/TIC.2003.1249088
E. Puschita, T. Palade, M. Szekely
{"title":"Performances analysis of the WCDMA downlink channel","authors":"E. Puschita, T. Palade, M. Szekely","doi":"10.1109/TIC.2003.1249088","DOIUrl":"https://doi.org/10.1109/TIC.2003.1249088","url":null,"abstract":"The paper presents the experimental evaluation of the WCDMA downlink channel. A simulator was built to investigate the performances of the DPCH (downlink physical channel). First, we give a brief description of the simulator and the parameters involved. The second part of the paper is dedicated to performances analysis: BER vs. E/sub b//N/sub 0/ and BER vs. number of users.","PeriodicalId":177770,"journal":{"name":"SympoTIC'03. Joint 1st Workshop on Mobile Future and Symposium on Trends in Communications","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126857639","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}
引用次数: 0
A genetic algorithm for server location and storage allocation in multimedia-on-demand network 多媒体点播网络中服务器定位与存储分配的遗传算法
SympoTIC'03. Joint 1st Workshop on Mobile Future and Symposium on Trends in Communications Pub Date : 2003-10-24 DOI: 10.1109/TIC.2003.1249094
Sun-jin KIm, Mun-kee Choi
{"title":"A genetic algorithm for server location and storage allocation in multimedia-on-demand network","authors":"Sun-jin KIm, Mun-kee Choi","doi":"10.1109/TIC.2003.1249094","DOIUrl":"https://doi.org/10.1109/TIC.2003.1249094","url":null,"abstract":"We propose a genetic algorithm (GA) to design a non-hierarchical and decentralized multimedia-on-demand (MOD) network architecture. To optimize the MOD network resource based on cost analysis, including server installation cost, program storage cost, and transmission cost, both server location and storage allocation were considered. In applying the proposed algorithm to the problem considered, many of components are devised to improve solution quality and computational efficiency: genetic representation; evaluation function; genetic operators; procedure. The results of extensive computational simulations showed that the proposed algorithm provides high quality solutions within reasonable computation times.","PeriodicalId":177770,"journal":{"name":"SympoTIC'03. Joint 1st Workshop on Mobile Future and Symposium on Trends in Communications","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130373419","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}
引用次数: 5
Two-dimensional quasi orthogonal complete complementary codes 二维拟正交完全互补码
SympoTIC'03. Joint 1st Workshop on Mobile Future and Symposium on Trends in Communications Pub Date : 1900-01-01 DOI: 10.1109/TIC.2003.1249083
M. Turcsány, P. Farkaš
{"title":"Two-dimensional quasi orthogonal complete complementary codes","authors":"M. Turcsány, P. Farkaš","doi":"10.1109/TIC.2003.1249083","DOIUrl":"https://doi.org/10.1109/TIC.2003.1249083","url":null,"abstract":"Construction of a new family of two-dimensional quasi orthogonal complete complementary codes (2D-QOCCC) is presented The new 2D-QOCCC retain most of the properties of the 2D-OCCC except the ideal sum of correlation values within the zero horizontal shift. The benefit is a several times larger number of signatures for a given number of elements, thus the enlargement of a maximum number of communicating parties for a fixed number of channels.","PeriodicalId":177770,"journal":{"name":"SympoTIC'03. Joint 1st Workshop on Mobile Future and Symposium on Trends in Communications","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123009702","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}
引用次数: 7
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