Streaming Video Capacity Comparisons of Multi-Antenna LTE Systems

Conference Paper · June 2010with21 Reads
DOI: 10.1109/VETECS.2010.5493971 · Source: IEEE Xplore
Conference: Vehicular Technology Conference (VTC 2010-Spring), 2010 IEEE 71st
Abstract
The 3GPP Long Term Evolution (LTE) Release-8 specifications are designed to deliver higher peak data rates, higher throughput and lower air-interface latency compared to 2G and 3G systems. This higher performance will make it possible to support more demanding applications beyond web-browsing and voice, requiring higher data rates and stricter QoS constraints. Video services are becoming increasingly popular over the Internet indicating that the demand for such high data-rate video applications over cellular wireless will continue to grow. However, in order to make these services commercially viable in a LTE system it is necessary for the air-interface to deliver high quality services to a significant number of users simultaneously. In this paper we investigate the video capacity of a LTE air-interface using realistic video traffic models. An LTE air-interface can support multiple-antenna transmit arrays and several multiple antenna transmission modes to increase system capacity. We investigate the benefits of using 4 transmit antennas compared to 2 transmit antennas on the video capacity of an LTE system. The results from our investigation indicate that the capacity benefits with 4 transmit antennas are much higher with video services than those observed with other traffic models such as the full-buffer traffic model. The results also show that a 10MHz TDD LTE system can service upto 48 users per sector with 256Kbps video streams in the downlink indicating that such services can be commercially viable.
    • "The Receive Diversity mode also enables the receiver system to receive signals from a number of independent sources to combat the effects of fading. The Open Loop Spatial Multiplexing (OLSM) mode is one of the Multiple Input Multiple Output (MIMO) antenna techniques which uses multiple antennas at both ends of the wireless link to support several signal paths to transfers multiple of data streams at the same time and it significantly increases the data rates and bandwidth efficiency of the systems [19],[ 20]. Hence various transmission modes of the advanced multi-antenna techniques offer diversity in data rates, reliability and system capacity which can directly affect the system performance in the LTE network. "
    [Show abstract] [Hide abstract] ABSTRACT: Long Term Evolution (LTE) system uses Internet Protocol (IP) based network architecture and advanced multi-antenna techniques to provide higher system throughput and high user mobility, intern to support low delay multimedia services such as voice, real time video connections and effective internet connectivity without any disruption. Hence in this paper, an attempt has been made to analyze the impact of mobility on the Quality of Service (QoS) parameters such as average throughput, average jitter and average delay of a LTE network for various transmission modes such as Serial-Input Serial-Output (SISO), Transmit Diversity, Receive Diversity and Open Loop Spatial Multiplexing (OLSM).
    Full-text · Article · Jul 2015
    • "The number of independent data streams that can be sent to the UE is restricted to either one or two data stream, even if the number of transmit antennas at the eNB is increased to four. So a 2x2 configuration does not impose any overt simplification [15]. "
    [Show abstract] [Hide abstract] ABSTRACT: Long Term Evolution (LTE) system adapts advanced Multiple Input Multiple Output (MIMO) antenna techniques on both uplink and downlink to achieve high peak data rates and higher system throughput. This enables LTE to support multimedia applications beyond web browsing and voice, which demands higher bandwidth configurations. LTE employs Orthogonal Frequency Division Multiple Access (OFDMA) in downlink to support spectrum flexibility in order to use upto 20MHz system bandwidth to improve the system throughput and robustness. Therefore the combined study of multi-antenna techniques and spectrum flexibility usage on the performance of LTE system becomes vital. Hence in this paper, an attempt has been made to evaluate the performance of different multi-antenna techniques with various system bandwidth configurations from 1.4MHz to 20MHz using QualNet 5.2 network simulator. The multi-antenna techniques considered for performance evaluation are Single Input Single Output (SISO), Multiple Input Single Output (MISO) and Multiple Input Multiple Output (MIMO). The performance metrics such as aggregate bytes received, average throughput, average delay and average jitter are considered for simulation study.
    Full-text · Article · Nov 2014
    • "The number of independent data streams that can be sent to the UE is restricted to either one or two stream, even if the number of transmit antennas at the eNB is increased to four. So a 2x2 configuration does not impose any overt simplification [10]. "
    [Show abstract] [Hide abstract] ABSTRACT: High data rate requirements of the Long Term Evolution - Advanced (LTE-A) systems can be achieved by adopting advanced Multiple Input Multiple Output (MIMO) antenna techniques on both uplink and downlink. The LTE air-interface supports multiple-antenna transmit arrays and different modes of multiple antenna transmissions. In this paper, performance of different MIMO techniques is evaluated using QualNet network simulator. The MIMO techniques considered for performance evaluation are SingleInput/ Multiple-Output (SIMO), Open Loop Spatial Multiplexing (OLSM) and Space-Frequency Block Coding (SFBC). The performance metrics considered are throughput, delay and jitter.
    Full-text · Article · Aug 2012 · International Journal of Scientific and Engineering Research
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