Results 181 to 190 of about 5,465 (214)
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Study on MC-CDMA for Underwater Acoustic Networks
2008 International Conference on Computer Science and Software Engineering, 2008In this paper, multiple access technique for the physical layer of underwater acoustic (UWA) networks is discussed. Considering the characteristics of acoustical channel and UWA networks, multi-carrier code division multiple access(MC-CDMA) method is chosen as the multiple access strategy in the design of an UWA network.
Jiemin Yan +4 more
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Integer-forcing receiver for MC-CDMA system
The Sixth International Workshop on Signal Design and Its Applications in Communications, 2013Integer-forcing (IF) linear receiver has been recently introduced for multiple-input multiple-output (MIMO) fading channels. The integer coefficients have to be chosen based on the channel realizations, and the choice of such coefficients is known to determine the receiver performance.
Hao Luo +3 more
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Chaotic sequence‐based MC‐CDMA for 5G
Concurrency and Computation: Practice and Experience, 2018SummaryA unique chaotic spreading sequence‐based MC‐CDMA (multi‐carrier code division multiple accesses) is studied in this article. By employing this spreading sequence, interference effect that is inherent in a multi‐user environment can be lessened by deciding on the spreading series with suitable cross‐correlation properties.
T. Reena raj +2 more
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Ultra Wideband Transmission based on MC-CDMA
GLOBECOM '03. IEEE Global Telecommunications Conference (IEEE Cat. No.03CH37489), 2004Ultra wideband (UWB) radios are characterized by the extreme wide bandwidth of their radiated signal. Although in the last years the research and development was focused on systems which use baseband pulse transmission, UWB is defined by its power spectral density and is therefore not restricted to baseband impulse radios.
Michael Schmidt, Friedrich K. Jondral
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The effect of synchronisation errors on MC-CDMA performance
1999 IEEE International Conference on Communications (Cat. No. 99CH36311), 2003We investigate the sensitivity of MC-CDMA systems to synchronisation errors. We show that the signal-to-noise ratio (SNR) of the MC-CDMA system at the input of the decision device in the presence of a carrier frequency offset or a clock frequency offset is a rapidly decreasing function of the number of carriers. For a maximal load, carrier phase jitter
Heidi Steendam, Marc Moeneclaey
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Coordinated jamming and communications in an MC-CDMA system
IEEE Transactions on Aerospace and Electronic Systems, 2015A coordinated jamming and communications technique for degrading enemy user transmission performance in a multicarrier code-division multiple-access system is introduced. A linear minimum mean square error (MMSE) algorithm with jamming matrix estimation in single-tone jamming is presented.
Huaxia Wang +3 more
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On Coding and Spreading for MC-CDMA
2000For future mobile communication systems, multicarrier code division multiple access (MC-CDMA) and its variants are interesting alternatives to methods based on singlecarrier (SC) on one hand and orthogonal frequency division multiplexing (OFDM) on the other.
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Phase Rotation/MC-CDMA for Uplink Transmission
2009In the uplink transmission of a cellular system, multi-access interference (MAI) is a big problem. To eliminate the MAI, in this paper, a new multi-carrier-code division multiple access using phase rotation (PR/MC-CDMA) is proposed. In the proposed method, each user's data symbol is spread using a user-specific phase-rotated spreading code.
Koichi Adachi, Masao Nakagawa
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