Iterative multiuser detection for ultra wideband systems

... computing power for detection In this section, we present the system model for this underdetermined MIMO system and introduce our PVC -MIMO detection 2.1 System Model Consider a MIMO system with ... Prevoting Cancellation-Based MIMO Detection For underdetermined MIMO systems, since a sufficiently low complexity and a near optimal performance cannot be obtained by ex...

Ngày tải lên: 21/06/2014, 11:20

... Receiver performance over different channel models, for CP = and channel estimation with pilot blocks when the channel estimation is performed with the IBI cancellation, the reduction in IBI for CP ... the synchronization errors, channel estimation errors , and as well as the derivation of analytical performance bounds for the channel estimation and equalizat...

Ngày tải lên: 21/06/2014, 16:20

... output of the correlators However, when low-rate samples are employed, the TOA estimation can take a very long time Therefore, we propose a two-step TOA estimation algorithm that can perform TOA estimation ... [38–40] The focus of this paper is on the twostep TOA estimation algorithm shown in Figure In order to perform fast TOA estimation, the first step of the proposed two...

Ngày tải lên: 21/06/2014, 22:20

... suppressed through base station cooperation We presented an alternative strategy to the distributed antenna system (DAS) for mitigating OCI which we termed as distributed iterative detection (DID) ... or isolated groups of cooperating BSs DISTRIBUTED ITERATIVE RECEIVER The setup for performing distributed detection with information exchange between base stations is sho...

Ngày tải lên: 21/06/2014, 22:20

... a transmitted- reference UWB receiver, ” Wireless Communications and Mobile Computing, vol 5, no 5, pp 537–549, 2005 [17] Y Wang, G Leus, and A.-J van der Veen, “On digital receiver design for transmitted ... employ Lw = 30 ns for synchronization Figure 11 shows the BER performance The BER performance for the MF equalizer (lines with ◦ markers) approaches after 12 dB, while...

Ngày tải lên: 21/06/2014, 23:20

... contribution we investigate the zero-forcing MUD (ZF-MUD) and minimum mean-square error MUD (MMSE-MUD) in the MC DS-CDMA systems Various alternatives for implementation of the ZF-MUD and MMSE-MUD ... xu ··· Zero-forcing − Rc CT yup HH up ··· Zero-forcing − Rc CT yqp HH qp xq Figure 4: Schematic block diagram for implementation of the SZF-MUD in MC DS-CDMA system...

Ngày tải lên: 22/06/2014, 19:20

... CONTROL FOR INTERFERENCE MITIGATION Motivated by the simulation and analysis results above, we take power control as the interference mitigation approach for the coexistence problem of MB-OFDM UWB ... performance of MB-OFDM UWB under the interference of DS, we observe that the I-R distance should be at least 17.2 m to guarantee the victim 8% PER for communications It m...

Ngày tải lên: 22/06/2014, 22:20

... Poor, and A F Molisch, Optimal and suboptimal linear receivers for time-hopping impulse radio systems,” in Proceedings of the IEEE Conference on Ultra Wideband Systems and Technologies (UWBST ... scheme simply ignores it CONCLUDING REMARKS Optimal and suboptimal finger selection algorithms for MMSE- SRake receivers in an IR-UWB system have been considered Si...

Ngày tải lên: 22/06/2014, 22:20

... 2002 [4] L J Cimini Jr., “Analysis and simulation of a digital mobile channel using orthogonal frequency division multiplexing, ” IEEE Transactions on Communications, vol 33, no 7, pp 665– 675, 1985 ... task group 3a,” IEEE P802.15-03/268r2, November 2003 [6] B L Floch, M Alard, and C Berrou, “Coded orthogonal frequency division multiplex,” Proceedings of the IEEE, vol 83, no 6, pp 982–9...

Ngày tải lên: 22/06/2014, 22:20

... for long code multiuser CDMA systems, ” IEEE Trans Signal Processing, vol 48, no 4, pp 988–1001, 2000 [19] Z Yang and X Wang, Blind turbo multiuser detection for long-code multipath CDMA, ” IEEE ... user and N = 16 for the low rate user Optimal spreading code design and random linear transform design will be investigated in future work Blind Multiuser Detection for...

Ngày tải lên: 23/06/2014, 00:20

... problem of blind multiuser detection for asynchronous MC DS-CDMA systems equipped with multiple transmit and receive antennae This is nowadays an interesting research topic, since MC modulation formats ... rule, which is optimal for hard-quantized statistics; on the other hand, for nr From now on, we adopt the normalization m = Blind Receivers for Multicarrier DS/CDMA...

Ngày tải lên: 23/06/2014, 01:20

... TONG YAN Degree: Master of Engineering Department: Electrical and Computer Engineering, NUS Thesis Title: Design of CMOS Receivers and Building Blocks for Ultra- Wideband Radio Abstract In this ... concentrates on design of UWB receiver building blocks for ultra- wideband application and their performance Blocks including multiplier, integrator, VGA...

Ngày tải lên: 04/10/2015, 15:44

... Optical recording was for a long time, and is still, considered a replacement for magnetic recording Optical recording systems potentially have greater reliability than magnetic recording systems ... DETECTION FOR HOLOGRAPHIC RECORDING SYSTEMS HE AN (M Eng., XIDIAN UNIVERSITY) A THESIS SUBMITTED FOR THE DEGREE OF MASTER OF ENGINEERING DEPARTMENT ... moving media Th...

Ngày tải lên: 04/10/2015, 15:45

... ITERATIVE MULTIUSER DETECTION FOR ULTRA- WIDEBAND SYSTEMS WANG XIAOLI (B.Eng University of Electronic Science & Technology of China) A THESIS SUBMITTED FOR THE DEGREE OF MASTER ... Adaptive MMSE Multiuser Detection 22 iv 2.4 Iterative Interference Cancellation & Decoding 24 2.5 Summary 27 Chapter Iterative Multiuser Detection for UWB Systems 28 ... 28 3.2 Itera...

Ngày tải lên: 08/11/2015, 17:16

... …………………………………………………… 47 3.6 Sequential Monte Carlo Methods …………………………… 51 2.3.2 2.3.3 Iterative Receiver Design for MIMO- OFDM Systems via Sequential Monte Carlo (SMC) techniques ………………………… 53 ... ITERATIVE RECEIVER DESIGN FOR MIMO- OFDM SYSTEMS VIA SEQUENTIAL MONTE CARLO (SMC) TECHNIQUES BAY LAY KHIM (B.Eng.(Hons.), NUS) A THESIS SU...

Ngày tải lên: 08/11/2015, 17:16