... linear successive interference cancellation in CDMA systems,” IEEE Transactions on Wireless Communications, vol 7, no 11, Article ID 4684589, pp 4128–4132, 2008 [7] J G Andrews, Interference cancellation ... successive interference cancellation for CDMA systems,” IEEE Transactions on Communications, vol 49, no 7, pp 1250– 1258, 2001 [9] W T Sang, K B Letaief, and R S Cheng, “Combined coding and successive ... and successive interference cancellation, ” IEEE Transactions on Wireless Communications, vol 5, no 9, Article ID 1687768, pp 2447–2456, 2006 [11] P Patel and J Holtzman, “Analysis of a simple successive...
Ngày tải lên: 21/06/2014, 09:20
... Detector 22 2.4 Interference Cancellation Schemes 24 2.4.1 Interference Cancellation Basic Building Block 24 2.4.2 Serial Interference Cancellation (SIC) 26 ii 2.4.3 Parallel Interference Cancellation ... the improved successive interference cancellation (ISIC) scheme that is comprised of a selective parallel interference cancellation (PIC) integrated into a successive interference cancellation ... Conclusion 75 Improved Successive Interference Cancellation 5.1 Issues of Successive Interference Cancellation Schemes 77 78 5.1.1 Mapping functions for decision bit 78 5.1.2 Block cancellations 79...
Ngày tải lên: 09/10/2015, 11:18
INTER-SYMBOL INTERFERENCE CANCELLATION FOR GSM SYSTEM USING NEURAL NETWORKS EQUALIZER
Ngày tải lên: 03/09/2012, 15:54
Báo cáo hóa học: "Research Article Multiple Interference Cancellation Performance for GPS Receivers with Dual-Polarized Antenna Arrays Jing Wang and Moe" ppt
... that for a horizontally polarized interference, aiV = (i = 1, 2, , N), whereas for a vertically polarized interference, aiH = (i = 1, 2, , N), and for LHCP interference, aiV = ja1H (i = 1, ... arrays The spatial nulling and polarization properties are combined to obtain a superior interference cancellation performance for multiple jammers with distinct polarizations Unlike single MVDR ... preserving the RHCP GPS signals It is noted that an LHCP interference is immediately removed when using RHCP antennas Further, a linearly polarized interference can be easily mitigated when the corresponding...
Ngày tải lên: 21/06/2014, 22:20
Báo cáo hóa học: " Research Article Performance of Turbo Interference Cancellation Receivers in Space-Time Block Coded DS-CDMA Systems" pot
... nonpunctured PA and IA receiver performances For each approach, we perform four iterative cancellation stages (or joint cancellation stages in the case of IA) thus giving a fair comparison, in terms of ... r = 0.32 for the K = and K = 15 systems, respectively CONCLUSION In this paper, two turbo interference cancellation receivers are discussed and are divided into the MMSE front-end turbo space-time ... 1064–1070, Geneva, Switzerland, May 1993 [10] A R Muller and B J Huber, “Iterated soft decision interference cancellation for CDMA,” in Broadband Wireless Communications, M Luise and S Pupolin, Eds.,...
Ngày tải lên: 21/06/2014, 23:20
Báo cáo hóa học: " Research Article Multiple-Antenna Interference Cancellation for WLAN with MAC Interference Avoidance in Open Access Networks" pptx
... and termi- nals • PHY layer interference cancellation at the AP taking into account the asynchronous interference model induced by the MAC layer B3 τ3 INTERFERENCE CANCELLATION Since training ... cochannel interference from a coexisting system was also accounted for It was shown that the developed semiblind interference cancellation techniques are essential for addressing the asynchronous interference ... structure of the interference in these scenarios is similar to the one illustrated in Figure Preamble (training) Information Desired signal Tt τ1 Interference τ2 B1 PROBLEM FORMULATION Interference...
Ngày tải lên: 22/06/2014, 19:20
Báo cáo hóa học: " Research Article Frequency Estimation in Iterative Interference Cancellation Applied to Multibeam Satellite Systems" pptx
... n[n], (5) J P Millerioux et al Interference cancellation Initial phase recovery y1 [n] Decoding Estimation of g1, Interference cancellation (m) dl [n] The interference cancellation block output at ... gk,k nk [n], yk (9) interference is entirely removed, and the carrier phase is perfectly compensated Initial phase recovery yK [n] Decoding Estimation of gK, Interference cancellation Decoding ... to use initial frequency estimations before interference cancellation In this case, the estimation accuracy is limited due to the very low signal-to-interferenceplus-noise ratio (unless using...
Ngày tải lên: 22/06/2014, 19:20
Báo cáo hóa học: " Research Article Interference Cancellation Schemes for Single-Carrier Block Transmission with Insufficient Cyclic Prefix" potx
... proposed interference cancellation schemes can significantly improve bit error rate (BER) performance of the SC-CP system with the insufficient GI, and especially, the proposed interference cancellation ... is defined as CIBI = Rcp H1 Tcp (13) PROPOSED INTERFERENCE CANCELLATION SCHEME AT TRANSMITTER In this section, we propose a simple interference cancellation scheme, which is performed in the ... (equalizer) in Figure (1) Linear equalization PROPOSED INTERFERENCE CANCELLATION SCHEME AT RECEIVER In this section, we propose interference cancellation schemes at the receiver Unlike the proposed...
Ngày tải lên: 22/06/2014, 19:20
Báo cáo hóa học: " Research Article Analysis of Adaptive Interference Cancellation Using Common-Mode Information in Wireline Communications" potx
... long loops, where the FEXT PSD level may lie below the PSD level of the background noise due to the loop attenuation Assumption ( ) states that the CM background noise level is of the same order ... short, the crosstalk PSD levels are very low and consequently (β) does not hold In case the pairs are extremely long, both the crosstalk PSD levels and the receive signal PSD levels are very low, ... (B.11) (B.5) Second, we show that the resulting interference power of an interference canceller with kW1 , given by |c + dkW1 |2 , is larger than the interference power with DM-only reception, given...
Ngày tải lên: 22/06/2014, 19:20
Báo cáo hóa học: " Space-Time Joint Interference Cancellation Using Fuzzy-Inference-Based Adaptive Filtering Techniques in Frequency-Selective Multipath Channels" potx
... interest, say of user 1, is the user to be acquired in the presence of intersymbol interference (ISI) and multiple-access interference (MAI) The information about the in-cell and inter-cell interferers ... linear interference suppression in the presence of dynamic fading,” IEEE Transactions on Communications, vol 49, no 4, pp 635–645, 2001 [17] M L Honig and J S Goldstein, “Adaptive reduced-rank interference ... FLC-LMS is slightly heavier than that of the conventional LMS (C-LMS), but it is still a tolerable level The conventional RLS (C-RLS) algorithm requires 2(MΥ)2 + 4MΥ multiplications and 2(MΥ)2 +...
Ngày tải lên: 22/06/2014, 23:20
Báo cáo hóa học: " WCDMA Uplink Parallel Interference Cancellation—System Simulations and Prototype Field Trials Bo Hagerman" pot
... intercell interference is emulated by additive white Gaussian noise with a power level according to the F value For link -level performance examples see Figure and [17] The presented link -level performance ... a multiple-cell deployment, interference is generated both from users in surrounding cells (intercell interference) as well as from users in the own cell (intracell interference) The PIC algorithm ... Link level RAKE PIC Single-user simulation Noise rise (dB) 10 CIR vs service quality Simulation for multicell environment Inter-to-intracell interference Capacity gain (0.75 M p , dB) System level...
Ngày tải lên: 23/06/2014, 01:20
Automatic spike sorting and robust power line interference cancellation for neural signal processing
... of the power line interference removal algorithm Chapter Power Line Interference Cancellation: Algorithm Design 2.1 Introduction As briefed in the previous chapter, power line interference may ... harmonic, and M is the number of harmonics present in the interference An ideal interference cancellation algorithm should eliminate the interference p(n), while perfectly preserving the neural ... the accuracy of all subsequent analyses 1.2 1.2.1 Thesis Motivation Power Line Interference Cancellation Power line interference is usually non-stationary, and can vary in frequency, amplitude...
Ngày tải lên: 09/09/2015, 08:12
Adaptive parallel interference cancellation receivers with diversity combining for multicarrier DS CDMA systems
... of such cancellation schemes: serial and parallel interference cancellation Serial Interference Cancellation (SIC) This technique is often also referred to as successive interference cancellation ... IC Interference Cancellation ICI Inter-chip Interference IDFT Inverse Discrete Fourier Transform IFFT Inverse Fast Fourier Transform ISDN Integrated Services Digital Network ISI Inter-symbol Interference ... Direct Sequence Code Division Multiple Access SD Selection Diversity SIC Serial or Successive Interference Cancellation SNR Signal to Noise Ratio S/P Serial to Parallel SS Spread Spectrum TACS...
Ngày tải lên: 26/09/2015, 11:07
Interference cancellation schemes for STBC multiuser systems
... mitigate interference of various origins, including inter-symbol interference and co-channel interference An effort has been taken in this thesis to present an overview of interference cancellation ... Finite Impulse Response GSM Global System for Mobile IC Interference Cancellation IFFT Inverse Fast Fourier Transform IIC Iterative Interference Cancellation iid Independent and Identically Distributed ... ITERATIVE INTERFERENCE CANCELLATION RECEIVER FOR STBC MULTIRATE MULTIUSER SYSTEMS 71 5.1 Introduction 71 5.2 Equal Rate System 71 5.2.1 System Model 72 5.2.2 Iterative Interference Cancellation...
Ngày tải lên: 08/11/2015, 16:39
Parallel interference cancellation schemes based on adaptive MMSE detection for DS CDMA systems
... subtractive interference cancellation detectors below 3.3.1 Successive Interference Cancellation The successive interference cancellation (SIC) detector takes a serial approach to interference cancellation ... 3.2.3 Adatpive MMSE Detector 25 3.3 Substractive Interference Cancellation 27 3.3.1 Successive Interference Cancellation 28 3.3.2 Parallel Interference Cancellation 30 3.4 PIC Scheme Based on the ... Detection Schemes 3.3.2 Parallel Interference Cancellation An alternative to SIC is the parallel interference cancellation (PIC) detector, which carries out the interference cancellation in parallel...
Ngày tải lên: 28/11/2015, 13:26
Báo cáo hóa học: " The Study of Quantum Interference in Metallic Photonic Crystals Doped with Four-Level Quantum Dots" pot
... decay to its ground level due to a cancellation of SE by QI between atomic transition levels Due to this, dark states with zero absorption amplitude would appear causing the multi -level atomic system ... level schematic is shown in Fig |c〉 ∆c δk Γc ∆b |b〉 ω ca Γb ω ba Probe Field (ω) |a〉 Γa |d〉 Fig Four -level QD with the two upper levels |ci and |bi which are near one another, and two lower levels ... here is assumed to be four -level QDs, with diameters ranging from to 10 nanometres, and two upper levels |ci and |bi which are close to one another The remaining two lower levels are denoted as |ai...
Ngày tải lên: 22/06/2014, 00:20
Báo cáo hóa học: " Research Article On Intercell Interference and Its Cancellation in Cellular Multicarrier CDMA Systems Simon Plass German Aer" potx
... intercell interference at the receiver side without the need of high complex intercell interference management schemes from the network side This paper presents iterative intercell interference cancellation ... intercell interference cancellation (ICIC) scheme was already proposed in [18] by taking into account the hard decisions from the demodulator to reconstruct the signal and cancel the intercell interference ... used for iterative cancellation of the multiple access interference (MAI) [19] It is possible to extend this principle to a cellular MC-CDMA downlink to cancel the intercell interference with...
Ngày tải lên: 22/06/2014, 19:20
The effects of RNA interference on the expression level of pea aphid ( acyrthosiphon pisum) sugar transporter gene (ap ST1)
... RNA interference 11 1.4.1 RNA interference discovery 11 1.4.2 RNA interference mechanisms 12 1.4.3 RNA interference uptake 15 1.4.4 RNA interference ... 1.4 RNA interference 1.4.1 RNA interference discovery RNA interference (RNAi) is a newly discovered biological process which occurs in the cytoplasm of cells and affects the expression level of ... the expression level of Ap_ST1 The effect of RNAi was monitored during seven days by determining the level of mRNA using qRT-PCR Clearly, there is a decrease in the expression level of the target...
Ngày tải lên: 08/11/2015, 00:04
User-level Interprocess Communication for Shared Memory Multiprocessors
... thread management system implemented at the user level to obtain user -level ACM TransactIons threads on Computer Systems, Vol 9, No 2, May 1991 User -Level Interprocess satkfactory have Communication ... Systems, Vol less than Functions their 9, No for kernel -level at activities 2, May 1991 Two Levels within threads Threads an address block space User -Level Interprocess Communication for Shared Memory ... required, scheduler When the first -level scheduler must of having to pass through the second -level mechanism performance relative to a system with only a single be will level CONCLUSIONS This paper...
Ngày tải lên: 12/09/2012, 15:05
Báo cáo y học: "Interference by new-generation mobile phones on critical care medical equipment"
... purposes The signals were amplified and their power level was controlled at W for GRPS in active time slots and at 0.2 W for UMTS These power levels correspond to maximal transmit performance of ... monitoring without a significant level of attention needed, for example a disturbed display) through significant (influence on monitoring with a significant level of attention needed, causing ... monitoring with a significant level of attention needed, causing substantial distraction from patient care; light (L) is defined as an influence on monitoring without a significant level of attention needed...
Ngày tải lên: 25/10/2012, 10:35