Abstract
This paper focused at communication system with multipath effects at building environment. The frequency that used for the communication system was 47 GHz. That frequency possibly used for higher bandwidth at communication system. The condition of communication propagation that used was downlink direction. Mobile station placed at track or street with buildings environment condition. This research analysis was based on transmitter power variation, bandwidth variation, and modulation threshold variation. That analysis produced signal to noise ratio value that was obtained from bandwidth variation and transmitter power variation. The transmitter power variation that used was consists of 0.01 Watt, 0.1 Watt, and 1 Watt. Threshold variations for communication modulation that used was consist of 16 QAM and 64 QAM. As the result such as bandwidth variation showed widened of bandwidth then more decreasing of signal to noise ration value, and more increasing of transmitter power then also more increase of signal to noise ratio value
Highlights
The communication system was developed continuously, many kinds of the research keeps going developed
Propagation can be influenced by multipath that spread to receiver, so multipath that occurred was from Radio Base Station (RBS) toward mobile station (MS) or from MS toward RBS
The mobile station was moving at track around buildings environment, so that communication propagation was influenced by multipath mechanism
Summary
The communication system was developed continuously, many kinds of the research keeps going developed. Propagation can be influenced by multipath that spread to receiver, so multipath that occurred was from Radio Base Station (RBS) toward mobile station (MS) or from MS toward RBS. The mobile station was moving at track around buildings environment, so that communication propagation was influenced by multipath mechanism. The analysis of this research that used such as transmitter power variation, bandwidth variation, and modulation variation. Modulation variation that used for 64 QAM was consist of code rate 2/3, 3/4, and 4/5 The communication threshold such as SINR value was consist of SNR value with IM (Implementation Margin) [13]. The results of this research that obtained were multipath and pathloss SNR value, with transmitter power variation, bandwidth variation, modulation threshold variation, and percentage of coverage area based mobile station movement at track
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