Serwis Infona wykorzystuje pliki cookies (ciasteczka). Są to wartości tekstowe, zapamiętywane przez przeglądarkę na urządzeniu użytkownika. Nasz serwis ma dostęp do tych wartości oraz wykorzystuje je do zapamiętania danych dotyczących użytkownika, takich jak np. ustawienia (typu widok ekranu, wybór języka interfejsu), zapamiętanie zalogowania. Korzystanie z serwisu Infona oznacza zgodę na zapis informacji i ich wykorzystanie dla celów korzytania z serwisu. Więcej informacji można znaleźć w Polityce prywatności oraz Regulaminie serwisu. Zamknięcie tego okienka potwierdza zapoznanie się z informacją o plikach cookies, akceptację polityki prywatności i regulaminu oraz sposobu wykorzystywania plików cookies w serwisie. Możesz zmienić ustawienia obsługi cookies w swojej przeglądarce.
Precoding-aided spatial modulation (PSM), which conveys information partially by the indices of receive antennas, has some advantages over conventional spatial modulation (SM) using the indices of transmit antennas. In PSM, the precoder may be optimized for different purposes. In this paper, we study the transmitter design in the PSM systems, which motivates to provide secrecy communications. Specifically,...
The 802.11ac amendment, approved by the IEEE in late 2013, is an evolution of the 802.11n amendment and specifies a physical (PHY) layer based on orthogonal frequency division multiplexing (OFDM) multiple-input multiple-output (MIMO) with up to eight spatial streams (SS). The challenges and issues regarding the analyzes, design and optimization of sphere decoding (SD) and lattice-reduction mean squared...
We consider a moving target detection problem using distributed multiple-input multiple-out (MIMO) radar, where the Signal-to-Noise Ratios (SNRs) in each transmit-receive (T-R) channels are different. We propose two knowledge-based detectors based on the generalized likelihood ratio test (GLRT) rule, both of which require the knowledge of the SNRs relationship among T-R channels. Finally, we evaluate...
Optimal data detection of a linear channel can always be implemented through the Viterbi algorithm (VA). However, in many cases of interest the memory of the channel prohibits application of the VA. A popular and conceptually simple method in this case, studied since the early 70s, is to first filter the received signal in order to shorten the memory of the channel, and then to apply a VA that operates...
In multiple-input-multiple-output (MIMO) systems, there is a performance degradation using conventional detector (CD) due to the combined effects of the signal interference between antennas and the possible correlation between the received fading signals. Thus, the matched filter in each received antenna becomes inefficient in high data throughput demanding systems. The performance or system capacity...
In this paper we discuss performance results of a novel real-time closed-loop power amplifier (PA) linearization technique that has originally been proposed by Ahmed and Li. The novel approach performs on-the-fly prediction and measurement of the PA AM/AM and AM/PM non-linearity, stores such non-linear characteristics and calculates their inverse functions in order to pre-distort the base-band amplitude...
Podaj zakres dat dla filtrowania wyświetlonych wyników. Możesz podać datę początkową, końcową lub obie daty. Daty możesz wpisać ręcznie lub wybrać za pomocą kalendarza.