نتایج جستجو برای: sfbc
تعداد نتایج: 128 فیلتر نتایج به سال:
This Paper aims at evaluating the performance of 3GPP Long Term Evolution (LTE) Downlink system under Urban Microcell Scenario for different MIMO transmission schemes. The performance parameters such as, Bit Error Rate (BER) and the Data Throughput are reported in terms of Signal to Noise Ratio (SNR) for different types of transmitting antenna and Modulation scheme. Transmit diversity scheme kn...
In this paper, new space time/frequency block coding (STBC/SFBC) scheme with angle feedback for 4-transmit antennas is proposed to achieve the full diversity gain with the full code rate. This scheme can be generalized with multiple receive antennas. With the proposed scheme, we show the channel characteristics can be much improved with as small as 1-bit feedback overhead. Simulation shows that...
We consider the possibility of designing an election method that eliminates the incentives for a voter to rank any other candidate equal to or ahead of his or her sincere favorite. We refer to these methods as satisfying the " Strong Favorite Betrayal Criterion " (SFBC). Methods satisfying our strategic criteria can be classified into four categories, according to their geometrical properties. ...
A robust peak-power reduction technique called active constellation extension (ACE) reduces the peak-to-average power ratio (PAPR) of single-input single-output (SISO) orthogonal frequency-division modulated (OFDM) signals by extending the outer constellation points in a way that minimizes the PAPR of an OFDM transmit signal, without reducing the bandwidth or increasing bit error rate (BER). Re...
A data-precoded relay-assisted (RA) scheme is proposed for a system cooperating with multiple relay nodes (RNs), each equipped with either a single-antenna or a two-antenna array. The classical RA systems using distributed space-time/frequency coding algorithms, because of the half-duplex constraint at the relays, require the use of a higher order constellation than in the case of a continuous ...
We present here evaluation of a new blood gas analysis system, RapidPoint 500(®) (Siemens Healthcare Diagnostics). The aim of this research was to compare the ergonomics and analytical performances of this analyser with those of the RapidLab 1265 for the following parameters: pH, partial oxygen pressure, partial carbon dioxide pressure, sodium, potassium, ionized calcium, lactate and the CO-oxi...
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