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There are two computer simulation methods to evaluate the performance of communication systems, i.e. the link level simulation and system level simulation. The PHY abstraction is the link-to-system mapping methodology for the system level simulation. Generally, for the system level simulation, synchronization errors such as carrier frequency offset or symbol timing offset are not taken into consideration...
M2M communication is information exchange between machines and machines without any human interaction. Standardization activities related to M2M communication are proceeding in many organizations due to the much applicability of M2M communication in various fields. One of the main issues for the M2M communication based on cellular network is the extremely large number of devices in service coverage...
The performance evaluation of the MIMO transmission schemes based on the IEEE 802.16m technology by the system level simulation is conducted in this paper. IEEE 802.16m technology supports various MIMO transmission schemes. We perform the evaluation of the system by applying various MIMO transmission schemes and compare the results. The evaluation results for each channel can be indicator to select...
This paper compares and analyzes the data delivery mechanisms of the type-1 and the type-3 architectures, which have different ways of packaging and delivering data, introduced by the WiMAX forum for WiMAX multicast/ broadcast service.
IEEE 802.16m, also known as the WirelessMAN-Advanced air interface, system adopts a random access using CDMA (Code Division Multiple Access)-based random access and message-based random access. The message-based random access is intended to reduce access delay when random access load is low. However, CDMA-based random access is used as random access load increases due to failure of message-based random...
While recent wireless networks begin to support mobile Internet protocol (MIP), even the latest wireless network technologies such as IEEE 802.16 wireless metropolitan area networks (WMANs), IEEE 802.11 wireless local area networks (WLANs), and high-speed downlink packet access (HSDPA) are limited in exploiting idle mode under mobile environments in which MIP is employed since they are designed without...
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