Results 251 to 260 of about 980,180 (287)
Some of the next articles are maybe not open access.
Interference multiple access communications
SPIE Proceedings, 2007The implementation of network centric warfare on the battlefield has driven the growing demand for high capacity warfighter communication systems. Although new high capacity SATCOM systems such as WGS are being introduced in the near term, these systems use the interference avoidance paradigm, which fundamentally limits overall network performance ...
L. Reggie Brothers +5 more
openaire +1 more source
New opportunistic interference alignment in MIMO interference multiple access channels
2016 8th International Conference on Wireless Communications & Signal Processing (WCSP), 2016In this paper, we investigate the K-cell multiple input multiple output (MIMO) interference multiple-access channel (IMAC) where opportunistic user scheduling and interference alignment (IA) are combined. For traditional opportunistic IA (OIA) scheme, without consideration on enhancing the effectiveness of the desired signal, each user calculates its ...
Lijun Bai, Li Hao, Siyang Tang
openaire +1 more source
2012 IEEE International Conference on Communications (ICC), 2012
The feasibility condition for interference alignment (IA) with no channel extension has not been known yet. In this paper, for the first time, we explore the feasibility of interference alignment and cancellation (IAC) which has been proposed for IA with no channel extension. We investigate IAC for the Gaussian interference multiple access channel (MAC)
Xin Qu, Chung G. Kang 0001
openaire +1 more source
The feasibility condition for interference alignment (IA) with no channel extension has not been known yet. In this paper, for the first time, we explore the feasibility of interference alignment and cancellation (IAC) which has been proposed for IA with no channel extension. We investigate IAC for the Gaussian interference multiple access channel (MAC)
Xin Qu, Chung G. Kang 0001
openaire +1 more source
Strong interference conditions for Multiple Access-Cognitive Interference Channel
2011 12th Canadian Workshop on Information Theory, 2011In this paper, we analyze the capacity region of a communication network where a Multiple Access Channel (MAC) and a point-to-point channel share a same medium and interfere with each other, where the transmitter of the point-to-point channel has cognitive capabilities.
Mahtab Mirmohseni +2 more
openaire +1 more source
Tandem Spreading Multiple Access with Successive Interference Cancellation
2019 IEEE/CIC International Conference on Communications in China (ICCC), 2019Grant-free non-orthogonal multiple access (NOMA) is adopted to serve massive machine-type devices in massive machine-type communications (mMTC). One major challenge of the grant-free NOMA for mMTC is the collision induced by nonorthogonal resource allocation.
Zichao Wei +4 more
openaire +1 more source
On bounds for the cognitive multiple access Z-Interference Channel
2015 IEEE 14th Canadian Workshop on Information Theory (CWIT), 2015The Cognitive Multiple Access Z-Interference Channel consists of a MAC channel that receives interference from an external transmitter. In a previous work we studied this model where both MAC users are cognitive and showed that an encoding scheme based on Dirty Paper coding attains the capacity region for the Gaussian case.
Fernando Reátegui del Águila +5 more
openaire +1 more source
Resource Allocation Strategy in Multiple Access Interference Channel
2014 IEEE 80th Vehicular Technology Conference (VTC2014-Fall), 2014Duality relations among achievable QoS parameters help us transform the problems in the broadcast channel to convex problems in multiple access channels. But a multiple access channel being considered as dual of a broadcast channel must exploit the additional freedom of power allocation traditionally considered only in a broadcast channel.
S. Barman Roy, A. S. Madhukumar
openaire +1 more source
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).
openaire +1 more source
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
openaire +1 more source
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
openaire +1 more source
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
openaire +1 more source
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
openaire +1 more source