linear serial interference cancellation

Ngày tải lên: 03/09/2012, 15:54

... criteria in 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 ... length of the CP used, the interference due to users whose signals arrive earlier than the synchronization instant cannot be eliminated In such a case, interference cancellation needs to be employed ... Interference cancellation for cellular systems: a contemporary overview,” IEEE Wireless Communications, vol 12, no 2, pp 19–29, 2005 [8] R Michael Buehrer, “Equal BER performance in linear successive interference...

Ngày tải lên: 21/06/2014, 09:20

... 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 ... 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...

Ngày tải lên: 21/06/2014, 22:20

... 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

... 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

... 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

... 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

... conjugate, respectively The ML solution (6) suggests a linear combination of Y1 and Y2 as estimator, which essentially corresponds to linear interference cancellation depicted in Figure and described ... The wireline channel can be modelled as a linear stationary Gaussian channel with memory and coloured interference (correlated in time) In general, interference originates from an arbitrary number ... structure of a linear interference canceller with coefficients adjusted so that the signalto-noise power ratio (SNR) at the canceller output is maximised The performance of adaptive cancellation...

Ngày tải lên: 22/06/2014, 19:20

... variable forgetting factor linear least-squares (VFF-LLS) algorithm to improve the tracking capability of channel estimation These works motivate the development of the linear MMSE CDMA receiver ... 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 ... receiver The antenna array receiver employs uniformly spaced linear- array antenna with M elements of halfwavelength spacing In addition, the linear MMSE receiver T is assumed to employ a known training...

Ngày tải lên: 22/06/2014, 23:20

... 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 ... achievable even so for interference cancellation base station architectures of rather limited complexity This is primarily due to the known nature of the inherent intracell interference generated ... robustness of realistic system implementations This paper investigates system-level performance of interference cancellation for the WCDMA uplink [11] by means of simulations and measurements from a prototype...

Ngày tải lên: 23/06/2014, 01:20

... 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

... of such cancellation schemes: serial and parallel interference cancellation Serial Interference Cancellation (SIC) This technique is often also referred to as successive interference cancellation ... into two categories: linear detection and subtractive interference cancellations 3.3.4 Linear Detector The linear multiuser receiver is based on a set of appropriately chosen linear transformations ... 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...

Ngày tải lên: 26/09/2015, 11:07

... Detector 20 2.3 Linear Minimum Mean Square Error (MMSE) Detector 22 2.4 Interference Cancellation Schemes 24 2.4.1 Interference Cancellation Basic Building Block 24 2.4.2 Serial Interference Cancellation ... improved successive interference cancellation (ISIC) scheme that is comprised of a selective parallel interference cancellation (PIC) integrated into a successive interference cancellation (SIC) ... SIC Serial (or successive) Interference Cancellation PIC Parallel Interference Cancellation BER Bit-Error Rate AWGN Additive White Gaussian Noise SSS Spread Spectrum Signals SIR Signal-to-Interference...

Ngày tải lên: 09/10/2015, 11:18

... 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

... subtractive interference cancellation detectors below 3.3.1 Successive Interference Cancellation The successive interference cancellation (SIC) detector takes a serial approach to interference cancellation ... 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 ... Sub-optimal approaches, including the linear detectors and the interference cancellation detectors, are thus being sought Chapter Introduction In interference cancellation schemes, PIC is one of...

Ngày tải lên: 28/11/2015, 13:26

... in interferencelimited scenario, the interference power minimization is analytically tractable and highlights the justification for unequal spacings Therefore, the problem of minimizing the interference ... spacings Δ through nonlinear relationships The first problem we tackle is that of finding the set of optimal spacings Δ that minimizes the average (with respect to fading) interference power, P ... distribution, 2.1 Interference power minimization P h0 , Δ, η = hH Qh0 , (5) Ergodic capacity maximization (Problem 1) : Δ = arg max C(Δ, η), From (1), the instantaneous total interference power...

Ngày tải lên: 22/06/2014, 19:20

... 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

... thesis, a CMOS dB -linear variable gain amplifier (VGA) with a novel DC offset cancellation scheme for direct-conversion receiver has been described The dB -linear VGA comprises a linear VGA and a ... the dB -linear VGA First a linear VGA is described Then a novel exponential voltage generator is proposed to obtain the dB -linear control characteristics Next the non-ideal effects on dB linearity ... of dB -linear VGA One is a VGA who has the inherent dB -linear gain characteristic The other is a linear VGA whose gain is controlled by an exponential voltage or current Many inherent dB-linear...

Ngày tải lên: 15/09/2015, 22:51

... Linear List Concepts DEFINITION: Linear List is a data structure where each element of it has a unique successor element element element Linear List Concepts (cont.) Linear List Concepts ... (random list): Data are not in particular order  Ordered list: data are arranged according to a key Linear List Concepts (cont.) Restricted list: • Only some operations can be used on the list •...

Ngày tải lên: 20/08/2012, 12:06

... options B Click the Edit menu > Replicate command to bring up the form shown in Figure 11 C On the Linear tab, type 144 into the dx edit box D Type into the Number edit box Step Add Frame Objects ... all of the diagonals N Click the Edit > Replicate command to bring up the Replicate form On the Linear tab, type into the dx edit box, 144 into the dy box, and into the dz box Type into the Number...

Ngày tải lên: 06/09/2012, 15:56