Essays about: "Qingbi Liao"
Found 2 essays containing the words Qingbi Liao.
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1. Ray-tracing based analysis of channel characteristics and capacity improvement capabilities of spatial multiplexing and beamforming at 15 and 28 GHz
University essay from Lunds universitet/Institutionen för elektro- och informationsteknikAbstract : In the previous decades, mm-Wave frequency bands have largely been ignored for cellular communication because of the high free space attenuation as well as the cost and complexity of mm-Wave RF circuits. However, with the improvement of RF and antenna technologies over the last decade, it has become feasible to con- sider mm-Wave bands for cellular communications. READ MORE
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2. Performance evaluation of interleaving techniques for IEEE 802.15.4 transmissions
University essay from Mittuniversitetet/Avdelningen för informations- och kommunikationssystemAbstract : In the wireless sensor network, the WLAN interference, multi-path fading andattenuation are the main reason for packets’ corruption. Forward errorcorrection is one of the methods for error mitigation. Many coding methods aredesigned to improve the reliability of wireless channel. READ MORE