Results 271 to 280 of about 315,787 (308)
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Multiple access on narrowband interference channels
IEEE GLOBECOM 1998 (Cat. NO. 98CH36250), 2002We investigate the influence of narrowband interference on different multiple access techniques including classic frequency-division multiple access (FDMA), time-division multiple access (TDMA), code-division multiple access (CDMA), and orthogonal FDMA (OFDMA).
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2011
Dramatic growth rates in capacity demands in wireless and other broadband systems have resulted in a rise in the use of communication networks in which multiple users share common communication resources. A significant consequence of this trend is the increasing presence of multiple-access interference (MAI), which arises in communication systems ...
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Dramatic growth rates in capacity demands in wireless and other broadband systems have resulted in a rise in the use of communication networks in which multiple users share common communication resources. A significant consequence of this trend is the increasing presence of multiple-access interference (MAI), which arises in communication systems ...
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IEEE Communications Letters, 2017
Multiple-access interference mitigation is important in code-division multiple-access (CDMA) systems for both information recovery and signal acquisition. Therefore, in this letter, we propose an open-loop adaptive filter based on the reiterative minimum mean-square error for the acquisition of CDMA signals.
Yuyao Shen +3 more
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Multiple-access interference mitigation is important in code-division multiple-access (CDMA) systems for both information recovery and signal acquisition. Therefore, in this letter, we propose an open-loop adaptive filter based on the reiterative minimum mean-square error for the acquisition of CDMA signals.
Yuyao Shen +3 more
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International Journal of Communication Systems, 2011
SUMMARYIn this paper, the performance of uncoded uplink transmissions in a broadband code division multiple access (CDMA) system using tapped delay line (TDL) antenna array under multipath conditions is investigated. An expression for broadband CDMA system is derived to calculate the optimal weights of TDL antenna array.
M. Anwar Hossain 0003, Mohammed Tarique
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SUMMARYIn this paper, the performance of uncoded uplink transmissions in a broadband code division multiple access (CDMA) system using tapped delay line (TDL) antenna array under multipath conditions is investigated. An expression for broadband CDMA system is derived to calculate the optimal weights of TDL antenna array.
M. Anwar Hossain 0003, Mohammed Tarique
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IEEE Transactions on Wireless Communications, 2006
A novel analytical method is introduced for exact statistical modeling of multiple access interference (MAI), in time hopping pulse position modulation and pulse amplitude modulation (TH-PPM and TH-PAM) ultra wideband (UWB) systems operating in additive white Gaussian noise (AWGN) channels.
Somasundaram Niranjayan +2 more
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A novel analytical method is introduced for exact statistical modeling of multiple access interference (MAI), in time hopping pulse position modulation and pulse amplitude modulation (TH-PPM and TH-PAM) ultra wideband (UWB) systems operating in additive white Gaussian noise (AWGN) channels.
Somasundaram Niranjayan +2 more
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Cancelling known interference in multiple access channels
2008 IEEE 25th Convention of Electrical and Electronics Engineers in Israel, 2008We study two generalizations of the writing on dirty paper problem. The first scenario is the cross interference multiple access channel, where each user knows the interference that accompanies the transmission of the other user. In the second scenario we consider a two-user multiple access chancel with a common interference known to both transmitters.
Tal Philosof +3 more
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An interference analysis for packet reservation multiple access
Seamless Interconnection for Universal Services. Global Telecommunications Conference. GLOBECOM'99. (Cat. No.99CH37042), 2003This paper presents a cochannel interference analysis for the packet reservation multiple access (PRMA) protocol, based on a Markov modeling of the interference generation process. PRMA is one of the first packet switching protocols proposed for wireless personal communications and its performance in cellular environments has been studied with ...
G.D. Kondylis, G.J. Pottie
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On random multiple access with unknown interference probabilities
1986 25th IEEE Conference on Decision and Control, 1986We consider the time slotted, packet switched, broadcast type random multiple access channel with infinite number of stations. Due to interference, some successful transmissions are erased, and some empty slots are erroneously interpreted as collisions.
Tzvi Shukhman, Adam Shwartz
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Analysis of multiple-access interference for CDMA signals
2017 IEEE Conference of Russian Young Researchers in Electrical and Electronic Engineering (EIConRus), 2017Methods of modern GNNS organization, their frequency bandwidth and signals generation were described. Nowadays bandwidth for every field of concern is strongly limited. Popularity of radionavigation leads to overlapping spectrum. Modern GNSS are using signals with CDMA to minimize interference.
Dmitriy V. Gayvoronskiy +1 more
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Multiple access interference as spatially colored noise
Proceedings IEEE 56th Vehicular Technology Conference, 2003A model is introduced for WCDMA systems using antenna arrays that extends the white noise description of uniformly distributed interferers to a colored noise description of clustered interferers. A derivation of the model in a spatiotemporally correlated channel is presented.
J.V. Steele +3 more
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