Spatial Modulation(SM) is a newlyintroduced wireless transmission scheme,andSpace Shift Keying(SSK) is its simplifiedversion.Their capacity performance has notbeen well examined to date.Starting frombasic definitions ...Spatial Modulation(SM) is a newlyintroduced wireless transmission scheme,andSpace Shift Keying(SSK) is its simplifiedversion.Their capacity performance has notbeen well examined to date.Starting frombasic definitions of information theory,through theoretical analyses and numericalcalculations,this paper evaluates the capacityof SM systems in various channels.Our conclusion is that under Rayleigh fading channels,the capacity of the SSK system is limited bythe Signal-to-Noise Ratio(SNR) or the number of transmit antennas,whichever one issmaller.From the capacity point of view,theSM system is better than the Single-Input andSingle-Output(SISO) system,but worse thanthe Multiple-Input and Single-Output(MISO)system.The correlation between transmit antennas will degrade the performance of theSSK system.Line-of-Sight(LOS) may causeperformance degradation for SSK,but capacity increases for SM.展开更多
In this article the crucial role of the Lutheran Church in Sweden in neighboring Lutheran Danish enemies in the province of Scania into the pseudo-indigenization process of making loyal Swedish citizen after the peace...In this article the crucial role of the Lutheran Church in Sweden in neighboring Lutheran Danish enemies in the province of Scania into the pseudo-indigenization process of making loyal Swedish citizen after the peace treaty of Roskilde 1658, and more pronounced after 1678, is described and discussed. The process included educational, pedagogical, judicial, liturgical and theological-rhetorical means and had significant, invaluable, and long lasting consequences. The province remains as a part of the Kingdom of Sweden. From a historical perspective, the process was fast and successful, even though some modem historians question the speediness of the process and thereby want to modify the picture of a fast and non-problematic Swedification or pseudo-indigenization process.展开更多
基金supported by the National High Technical Research and Development Program of China(863Program)under Grant No.2011-AA010201the National Natural Science Foundation of China under Grant No.60972054
文摘Spatial Modulation(SM) is a newlyintroduced wireless transmission scheme,andSpace Shift Keying(SSK) is its simplifiedversion.Their capacity performance has notbeen well examined to date.Starting frombasic definitions of information theory,through theoretical analyses and numericalcalculations,this paper evaluates the capacityof SM systems in various channels.Our conclusion is that under Rayleigh fading channels,the capacity of the SSK system is limited bythe Signal-to-Noise Ratio(SNR) or the number of transmit antennas,whichever one issmaller.From the capacity point of view,theSM system is better than the Single-Input andSingle-Output(SISO) system,but worse thanthe Multiple-Input and Single-Output(MISO)system.The correlation between transmit antennas will degrade the performance of theSSK system.Line-of-Sight(LOS) may causeperformance degradation for SSK,but capacity increases for SM.
文摘In this article the crucial role of the Lutheran Church in Sweden in neighboring Lutheran Danish enemies in the province of Scania into the pseudo-indigenization process of making loyal Swedish citizen after the peace treaty of Roskilde 1658, and more pronounced after 1678, is described and discussed. The process included educational, pedagogical, judicial, liturgical and theological-rhetorical means and had significant, invaluable, and long lasting consequences. The province remains as a part of the Kingdom of Sweden. From a historical perspective, the process was fast and successful, even though some modem historians question the speediness of the process and thereby want to modify the picture of a fast and non-problematic Swedification or pseudo-indigenization process.
