Báo cáo hóa học: " Blind Multiuser Detection for Long-Code CDMA Systems with Transmission-Induced Cyclostationarity" pdf

... long code multiuser CDMA systems, ” IEEE Trans. Signal Process- ing, vol. 48, no. 4, pp. 988–1001, 2000. [19] Z. Yang and X. Wang, Blind turbo multiuser detection for long-code multipath CDMA, ” ... Networking 2005:2, 206–215 c  2005 Hindawi Publishing Corporation Blind Multiuser Detection for Long-Code CDMA Systems with Transmission-Induced Cyclostationarity...

Ngày tải lên: 23/06/2014, 00:20

... for blind multiuser detection of multirate DS /CDMA systems equipped with a single antenna or multiple antennas. With all the users’ spreading sequences known a priori, two mul- tirate blind multiuser ... kurtosis maximization algorithm (FKMA) for blind multiuser detection of single-rate DS /CDMA systems and s ome other applications such as blind beamforming an...

Ngày tải lên: 22/06/2014, 23:20

... offered by the CDMA spreading. In the uplink, the performance of SCBS -CDMA is equivalent to the one of SC -CDMA for a typ- ical user’s load, worse for a small user’s load and better for a high user’s ... resources. For example, it has been recently proposed, in [16] for the downlink, and in [17] for the uplink, to perform a two-dimensional spread- ing (combination of MC -CDMA...

Ngày tải lên: 23/06/2014, 00:20

... detector. 1. INTRODUCTION Blind multiuser detection for code-division multiple-access (CDMA) systems has flourished rapidly in recent years. The general ground work of blind multiuser detection was first reported ... Xu, Blind multiuser channel estimation in asynchronous CDMA systems, ” IEEE Trans. Signal Processing, vol. 45, no. 1, pp. 137–147, 1997. [9] X. Wang and H. V...

Ngày tải lên: 23/06/2014, 00:20

... in which multiuser detection is applied. Full interference detection is assumed. with multiuser detection, a 14% increase for one user or 7% for both users can be observed. For example, without ... that of the joint multiuser detection and OSB algorithm. The idea of running ISB with multiuser detection can be extended to systems with more than 2 users. However,...

Ngày tải lên: 22/06/2014, 23:20

... millisecond for f s = 16 kHz). The under- lying assumption is that signals are stationary and ergodic within the current block. See [26] for a sample-by-sample study. 5.4. Performance evaluation For ... coordinates, for the 2 sectors where the people are, and uniform in polar coordinates for the other sectors (P k (v) ∝v −1 ). Each distribution was ap- proximated with N = 400 po...

Ngày tải lên: 22/06/2014, 23:20

... interference. Fortu- nately, WCDMA also offers signal structures that could be exploited in an estimation scheme. Blind estimation or detection algorithms have been pro- posed for space-time coded CDMA systems. ... multiuser receiver for CDMA systems with space-time coding,” IEEE Trans. Sig- nal Processing, vol. 50, no. 5, pp. 1193–1204, 2002. [17] L. Tong, A J. van der Veen...

Ngày tải lên: 22/06/2014, 23:20

... H + =0,thenweconsiderc j for j ≥ 2. As per the above arguments, J(0) < c 0 ≤ c 2 ≤ c 3 ≤···≤ c dim H − ≤ c ∞ and if c := c j = = c j+l for 2 ≤ j ≤ j + l ≤ dim H - with l ≥ 1, then i(K c ∩ S) ≥ l +1≥ 2. Therefore, ... theory with applications to differential equations. CBMS Reg Cof Ser Math. 65 (1986) doi:10.1186/1687-2770-2011-18 Cite this article as: Qian: Sign-changing solutions...

Ngày tải lên: 21/06/2014, 00:20

... calibrated, the per- formance of the model was tested for two, three, and four LEDs. Figure 15 shows the results obtained for users 1–5. For each subject, black dots represent the real values for the fix- ations. ... pupil 3D position and consequently provides information about E position but not for C. There- fore, the model based on the pupil ellipse does not allow for the estima...

Ngày tải lên: 22/06/2014, 19:20

... performance has been shown to be greatly improved compared with that of 1D RAKE receiver alone or CDMA with adaptive array antenna without implementing RAKE combination. How- ever, the beamforming ... Champagne, “Improving the perfor- mance of blind CDMA 2D RAKE receivers with phase am- biguity in the bit decision variable,” in Proc. 32th Asilomar Conference on Signals, Systems...

Ngày tải lên: 23/06/2014, 01:20