interference cancellation in hsdpa terminals

... receiver structure them in this paper since excluding them in the transmission can result in degradation in the MAP decoder performance and/or increased delay in iterative decoding [23] For a r = ... waveform and also to the fading factors of all receiver antennas The maximum-ratio combining (MRC) technique is used to combine all the MF outputs This combining and dispreading process will be repeated ... turbo codes are investigated in a turbo space-time coded MIMO-CDMA system as a possible way of achieving higher data rates in DS-CDMA uplink Results show that by using two transmitting antennas...

Ngày tải lên: 21/06/2014, 23:20

... 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 symbols are ... terminals Cross-layer effects of continuous and intermittent intersystem interference from a coexisting impolite transmitter are also addressed The asynchronous interference model is derived in ... 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

... Interference cancellation Initial phase recovery y1 [n] Decoding Estimation of g1, Interference cancellation (m) dl [n] The interference cancellation block output at the mth iteration (or the decoding ... Decoding (m) dk [n] Estimation of gk, Interference cancellation (m+1) yk [n] In the case of perfect channel estimation and interfering symbol decisions, we get To beam l, for k interfering on ... 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 Decoding is...

Ngày tải lên: 22/06/2014, 19:20

... Springer, Herrsching, Germany, May 2007 [21] S Plass, “Investigations on soft inter-cell interference cancellation in OFDM-CDM systems,” in Proceedings of the 12th International OFDM Workshop (InOWo ... complex intercell interference management schemes from the network side This paper presents iterative intercell interference cancellation schemes for a cellular MC-CDMA downlink An intercell interference ... soft values is presented in more detail which is named soft ICIC The in uence of intercell interference within a cellular environment is investigated in Section Also in this section, the performances...

Ngày tải lên: 22/06/2014, 19:20

... Y2 (12) In the following, we distinguish between the Wiener filter solution kW1 obtained for X = and the Wiener filter solution kW2 obtained for X = Inserting (2) and (3) into (12), we obtain kW1 ... present on the CM input The achievable improvement in the presence of several interference sources depends on the correlation of the resulting interference components originating from different ... T Magesacher, P Odling, and P O B¨ rjesson, “Adaptive ino terference cancellation using common-mode information in DSL,” in Proceedings of the 13th European Signal Processing Conference (EUSIPCO...

Ngày tải lên: 22/06/2014, 19:20

... 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 ... considered in the presence of frequency-selective multipath fading Users ∼ Kintra are assumed to be users in the active cell and users ∼ Kinter are the intercell interferers The spreading sequence ... operated in a decision-directed (DD) mode [18–20] Later it was shown in [4] that the linear MMSE receiver can be operated in a blind adaptation manner which obviates the necessity of training The...

Ngày tải lên: 22/06/2014, 23:20

Ngày tải lên: 03/09/2012, 15:54

... can be explained by examining the particular distribution involved, for one single as well as for multiple interfering cells A typical cdf of the interference gain (single or multiple interferers) ... characterizing the interference power I is equivalent to studying the interference gain G We will concentrate on the latter in the subsequent sections III Methodology We are now interested in finding ... in Section III-B.1) Page of 20 1) Preliminaries: We begin this section by examining two important points When taking into account multipath fading as well as shadowing as the fading effects in...

Ngày tải lên: 21/06/2014, 00:20

... polarization of the leads is fixed, both spin-up and spin-down line-width functions will be enhanced with increasing tLR, resulting in increased total current as shown in Figure 4(a) For the antiparallel ... LL: Spin-polarized current and spin accumulation in a three-terminal two quantum dots ring Appl Phys Lett 2008, 92:172104 Chi F, Zheng J, Sun LL: Spin accumulation and pure spin current in a three-terminal ... three-terminal quantum dot ring with Rashba spin-orbit effect J Appl Phys 2008, 104:043707 Sun QF, Xie XC: Bias-controllable intrinsic spin polarization in a quantum dot: Proposed scheme based on spin-orbit...

Ngày tải lên: 21/06/2014, 04:20

... decreasing power delay profile, the average interference power increases with an increasing τa → m or τb → m As a result, ordering with decreasing average SINR is equivalent to ordering with increasing ... decaying channel is considered, ordering with decreasing average SINR is equivalent to ordering with increasing TOA Following (3), the average SINR of quasi-synchronous BS-CDMA is given by SINRm ... Figure 4: SINR versus SNR, τ1 = 0, τ2 = · · · = τ8 = the simulation In addition, SINR of different users decreases with an increasing TOA In another words, an ordering with decreasing average SINR is...

Ngày tải lên: 21/06/2014, 09:20

... for incrementally increasing values of the self -interference coefficient It alternates between two steps: increasing the value of a virtual self -interference coefficient gv (note that this increasing ... with an initial SINR guess γ containing entries with nearly zero values A standard way to deal with the self -interference problem consists of adding a supplementary combinatorial constraint in the ... gains experienced in n=1 s= qs (b) on the self -interference n the tandem wireless network (Figure 4) This behavior is intuitively explained by looking in to the network topology When the self-interference...

Ngày tải lên: 21/06/2014, 11:20

... the probability of SUs having to vacate the assigned channel and causing interference to PUs The probability of causing interference may be further reduced by performing a channel rearrangement ... maximum of two SUs fit into the upper band At this point, it is more convenient to move the SU in the lower band to the empty channel in the upper band, avoiding in this way future interference if a ... and decreasing (increasing) it reduces (augments) the acceptance rate of SU requests, which will in turn decrease (increase) ft both P2 and the interference Note that the definition of t in this...

Ngày tải lên: 21/06/2014, 17:20

... basis to separate the interfering sources in the uplink A number of interference management techniques tackling the intercell and intracell interference are then presented In Section 4, system ... cap.) Uplink Interference Management As the uncoordinated UEs get close to nonserving NodeB, they typically introduce at these NodeBs interference that is significant w.r.t the noise floor Interference ... house In this case, the backyard HUE has to further increase the power to overcome the interference from the uncoordinated KTU By doing so, it aggravates the resource constraint in the uplink by...

Ngày tải lên: 21/06/2014, 18:20

... on Advances in Signal Processing preserving the RHCP GPS signals It is noted that an LHCP interference is immediately removed when using RHCP antennas Further, a linearly polarized interference ... where P2 has the same structure as P in (A.2) When M1 and M2 are smaller than N, since the steering vectors involved in constructing P1 and P2 are linearly independent, P1 is a matrix of rank ... for estimating and suppressing narrow-band interference in PN spread-spectrum systems,” IEEE Transactions on Communications, vol 30, no 5, part 2, pp 913–924, 1982 [4] L B Milstein, “Interference...

Ngày tải lên: 21/06/2014, 22:20

... the synchronization errors (in terms of CFOs and timing offsets) are large, and hence interference cancellation (IC) techniques employed at the destination will be of interest Equalization techniques ... relay-to-destination channels, and (ii) intercarrier interference (ICI) occurs due to imperfect carrier synchronization between the relay nodes and the destination, both of which result in errorfloors in ... cancelling detector for AF protocol In this section, we propose a two-step parallel interference canceling (PIC) receiver that cancels the frequencyselectivity-induced ISI, and the CFO-induced...

Ngày tải lên: 22/06/2014, 01:20

... interference No excision (single/multiple interference) Single interference excised Multiple interference excised Figure 5: MP TFD of a multicomponent interference consisting of linear and quadratic ... consisting of linear and quadratic chirps at JSR = 40 dB −8 0.3 0.2 0.1 −10 −8 −6 −4 −2 SNR (dB) 10 No interference No excision (single interference) No excision (multiple interference) Single interference ... signal with a linear interference at JSR = dB, (b) estimate of the interference, (c) interference excised SS signal error rate The results obtained show that the excision of the single interference...

Ngày tải lên: 22/06/2014, 19:20

... weights taking in consideration the interference due to the insufficient GI; (2) the replica signal of the interference is generated taking advantages of the temporal localization nature of the interference ... to the ISI canceller (equalizer) in Figure (1) Linear equalization PROPOSED INTERFERENCE CANCELLATION SCHEME AT RECEIVER In this section, we propose interference cancellation schemes at the receiver ... 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 transmitter Although...

Ngày tải lên: 22/06/2014, 19:20

... line Coherent combining without interference (c) A Coherent combining under interference (d) Desired signal in 2D Interference in 2D (e) (f) Figure 3: Illustration of coherent energy combining ... following enhanced ranging accuracy under varying levels of interference, and quantification of the impact of nonlinear filtering on detection performance (i) Ranging is quite sensitive to interference, ... since the leading edge sample may be very weak compared to interference samples (ii) A single interference energy sample may prolong the searchback process, and increase ranging error (iii) In...

Ngày tải lên: 22/06/2014, 22:20

... Murata, K.-R M¨ ller, A Ziehe, and S Amari, “Adaptive onu line learning in changing environments,” in Advances in Neural Information Processing Systems (NIPS ’96), vol 9, pp 599–605, Denver, Colo, ... Computer Science and Engineering, Oregon Graduate Institute, Beaverton, Ore, USA, 1995 [22] L Bottou, “Online algorithms and stochastic approximations,” in Online Learning in Neural Networks, D ... relative strength of the source signals, so the operating range for input signal-to -interference ratio (SIR) is quite large However, in practice, if the interference is too strong, the front-end synchronization...

Ngày tải lên: 22/06/2014, 23:20

... the dominant crosstalkers to a victim line are usually its neighbouring lines in the binder or shorter loops in the binder, Note that the cyclic prefix in DMT modulation results in a loss in the ... processing power ( ρk ) is an increasing or decreasing function of θ ( Theorem The processing power ρk ) is an increasing function of threshold value θ in Algorithms and and a decreasing function in ... Engineering at the University of Canterbury, Christchurch, New Zealand In 2006, he held a visiting appointment at the Samsung Advanced Institute of Technology in South Korea His research interests...

Ngày tải lên: 22/06/2014, 23:20