báo cáo hóa học: " Low PAPR space frequency block coding for multiuser MIMO SC-FDMA systems: specific issues for users with different spectral allocations" ppt

... 2011:54 http://asp.eurasipjournals.com/content/2011/1/54 Page 3 of 10 RESEARCH Open Access Low PAPR space frequency block coding for multiuser MIMO SC-FDMA systems: specific issues for users with different spectral allocations Cristina Ciochina * , ... technique for SC-FDMA, coined single-carrier space frequency block coding (SC-SFBC), was alread...

Ngày tải lên: 21/06/2014, 00:20

... presents a novel matched rotation precoding (MRP) scheme to design a rate one space- frequency block code (SFBC) and a multirate SFBC for MIMO- OFDM systems with limited feedback. The proposed rate ... SFBC with MRP can overcome the diversity loss for specific propagation scenarios, always improve the system performance, and demonstrate flexible performance with large performanc...

Ngày tải lên: 21/06/2014, 20:20

... revised form 30 April 2003 The goal of this paper is to reduce the decoding complexity of space- time block turbo-coded system with low performance degra- dation. Two block turbo-coded systems with ... near-optimum block turbo decoder with coding gain loss of 0.5 dB at the BER of 10 −5 over AWGN channel. Keywords and phrases: block turbo code, space- time block code, lo...

Ngày tải lên: 23/06/2014, 01:20

... Distributed Space- Frequency Coding (DSFC) or the application of the existing space- time /frequency codes in a distributed manner for the wireless relay-based systems. The use of Space- Time Block Coding ... global coding rate being R g = 1/3. The scenarios selected for performance evaluation con- sider the cooperative topologies with two RNs and with one RN (see Figur...

Ngày tải lên: 21/06/2014, 11:20

... propose a closed-form formula for the space- time correlation function for MIMO systems. ¨ Ozdemir et al. suggest a model to combine improved sum-of-sinusoids simulation models proposed for fading ... performance of space- frequency coded MIMO- OFDM,” IEEE Journal on Selected Areas in Communications, vol. 21, no. 3, pp. 427–439, 2003. [2] A. Abdi and M. Kaveh, “A space- time co...

Ngày tải lên: 21/06/2014, 23:20

... three times for 3 min with PBS, and blo cked with a solution of 30 mL/L hydrogen peroxide in ethanol for 10 min at room temperature. They were immersed in 30 mL/L normal horse serum for 10 min ... treated with RFA at 55°C; group II was treated with RFA at 70°C; group III was treated with RFA at 85°C; and the control group received laparotomy, RFA probe puncture but no ablation...

Ngày tải lên: 18/06/2014, 16:20

... Terminology Criteria for Adverse Events (NCI-CTCAE) version 3.0 was used to assess toxicity. Statistical methods All analyses were performed using the Statistical Pack- age for Social Sciences for Windows, following ... patients with melanoma received IFN-a 2b treatment and were evaluated for Treg levels. Before treatment, Treg levels were significantly higher in patients with mel...

Ngày tải lên: 18/06/2014, 16:20

... tivity versus 1-specificity at different cut-off values of the studied variable. The uppermost left point represents the best cut-off value (based on the high- est sensitivity with the lowest false ... reactions with the production of brain -specific auto-antibodies in genetically susceptible individuals. These antibodies may cross the blood brain barrier and combine with brain tissu...

Ngày tải lên: 19/06/2014, 22:20

... concentration with the outcome of the disease in 65 patients with ischemic stroke Panel A: Distribution of the patients with different outcome of the disease among patients with low (<6), ... approaches for a disease with a rather limited therapeutic arsenal at present. Figure 4 11 According to our second observation, lower level of ficolin-3 in the follow-up sample...

Ngày tải lên: 19/06/2014, 22:20

... recurrence f ree survival (RFS). Follow-up started at date of diagnosi s and ended at recurrent dis- ease, death, lost to follow-up (emigration) or last date of follow- up with regard to recurrent disease. ... towards a prolonged OS for tumours with high RBM3 expression (RR = 0.48; 95%CI = 0.18-1.24). In melanomas > 1 mm (n = 84), RBM3 was not associat ed with RFS (data not shown)...

Ngày tải lên: 20/06/2014, 04:20