In this paper, an efficient multiple-input multiple-output (MIMO) detection scheme with low complexity is proposed. The proposed scheme has a feature of combined a QRD-M with a complex lattice reduction (LR)-aided detection scheme. For the first T stages, the QRD-M detection is executed. And then, the complex LR-aided detection is executed for last Nt-T stages. Simulation results show that the proposed detection scheme provides error performance comparable to the QRD-M detection. And this scheme can significantly reduce the computational complexity compared with the QRD-M, because the complexity for the QRD-M is limited by the newly adopted parameter T. The value of T is determined by required system performance.
In this paper, a selective QR-based detection scheme using channel condition is proposed in MIMO-OFDM system. In the proposed scheme, a channel state is estimated by using channel condition number. And then, either QRD-M detection scheme or QR-PIC detection scheme is selected according to the channel condition number. The proposed scheme selects QRD-M detection scheme in case of bad channel condition and QR-PIC detection scheme in case of good channel condition. Compared with the QRD-M detection scheme, the proposed detection scheme can achieve a similar performance with significant reduction in computational complexity.
North waters of the island of Bengkalis is a place boiling down to several rivers, including the river Jangkang and River Liung. The rivers have affected the concentration of total suspended sediment (TSS) in the strait waters of North Bengkalis Island. The results based on satellite imagery data show that TSS is quite high in the West season period until the transition period I (West to East) with a large concentration value of 200 mg / l. For the lowest TSS concentration occurs in the East season i.e., between 0 - 200 mg/l. TSS concentrations that dominate in the East season range from 51 to 75 mg/l. This value is higher than the TSS concentration of field data analysis, i.e., between 23 - 39 mg/l. Changes of coastal coastline of North Bengkalis during the last 20 years continue to change the size of the land area, with a land area of 131 ha lost.
This study aims to compare between the nutrional content and anti-oxidants ,the bioactivity and the anti-oxidation that found in the ethanolic extract of fruits and leaves (Morus nigra ,Morus alba )which found in the region of Qued Souf.\nThe study was about the estimation of proteins, carbohydrates, phynolic and flavinoid compounds, Anthocianine pigment and carotene, also measuring the acidity (pH) and electrical conductivity, as well as we carried out the counter effectiveness test of oxidation and the biologic effectiveness test. The results obtained showed that the fruits and leaves of both of the two types of the berries ,Have nearly the same amount of proteins and carbohydrates, also the leaves of Morusnigra and the fruits of the Morus alba have bigger amount of phenols and flavinoid . and as for the pigments , the fruits Morus alba and the leaves Morusnigra, the amount of anthocianin and there was a high amount of carotene in both types. Regarding the acidity (pH), it was mostly moderate where it tends to alkalinity in the leaves of Morus alba, and tends to acidity in the fruits of Morusnigra. while the electrical conductivity was nearly the same amoung the two types of fruits and leaves of Morusnigra. A low salinity was observed in the leaves of Morus alba. Morusnigra have higher bacterial inhibition activity and anti-oxidant activity compared to Morus alba .
Aim. Defining the platelet aggregation (PA) and interleukins IL-1β, IL-4, IL-6 and IL-18 indicators’ impact on the outcomes of ischemic stroke (IS). Materials and methods. A perspective clinical cohort study covers 108 IS patients. 93 (86,1%) patients were released from the hospital with improvements, but 15 (13,9%) patients did not survive. The study was carried out in the most acute (1st day of hospitalization) and acute (7 days of hospitalization) phases of the IS. The level of interleukins in blood serum was defined by enzyme immunoassay method. The PA research was performed by the nephelometric method. Results. Both in the most acute and acute phases of the IS, in parallel to the aggravation of PA disturbances, the lethal outcome probability grew. The latter also grew together with increase in the synthesis of IL-1β and IL-6, in the most acute phase of the IS. In the acute phase of the IS, lethal outcome was recorded in all patients with high values of IL-1β (>20.0 pg/ml) and IL-6 (>20.0 pg/ml), and all patients with low values of IL-1β (>15.0 pg/ml) showed improvement. When IL-4 was above 1.2 pg/ml, the probability of lethal outcome decreases and the one of improvements increases. Conclusions. Vivid disturbances of PA, IL-1β, IL-6 and IL-18 synthesis, in the most acute phase of the IS, signal higher probability of lethal outcome. Reduction in the levels of IL-1β, IL-6 and IL-18, in the acute phase, means improvement in conditions. The increase of IL-4, in the acute phase of the IS, means a high probability of improvement.