Channel capacity and channel estimation of OFDM ultra-wide-band systems

doi:10.1109/ICCSEE.2012.26

	Channel capacity and channel estimation of OFDM ultra-wide-band systems
	Li, Haiyan
	2012
会议名称	2012 International Conference on Computer Science and Electronics Engineering, ICCSEE 2012
会议录名称	Proceedings - 2012 International Conference on Computer Science and Electronics Engineering, ICCSEE 2012
卷号	2
页码	152-156
会议日期	2012-03-23 - 2012-03-25
会议地点	Hangzhou, Zhejiang, China
出版者	IEEE Computer Society
摘要	Ultra-wide-band (UWB) wireless systems are often applied to short-range high-speed data transmission. According to Shannon formula, UWB system with gigahertz band can reach ultra-high data transmission rate. The Shannon capacity of a communication channel is the maximum transmission rate that the channel can support, and it increases with higher signal to noise power ratio (SNR) and wider bandwidth. However, as widening bandwidths often lead to higher noise power, it is SNR rather than the bandwidth that plays the key role in setting the actual data transmission capacity of a channel. With a significant potential of enhancing SNR, multi-band orthogonal frequency-division multiplexing ultra-wide-band (MB-OFDM UWB) system is able to achieve much higher anti-noise capability and flexibility than the conventional impulse radio (IR) UWB. MB-OFDM UWB with multiple-input multiple-output (MIMO) antennas is a viable way to improve channel capacity and expand coverage area. Simulations show that larger quantity of receiver antenna can improve channel capacity even when the total number of transmitter and receiver antenna is constant. A channel estimation algorithm in MIMO-OFDM technology also can be applied to UWB communications. Simulation shows MB-OFDM UWB systems with MIMO technology can achieve better bit error rate performance than the MB-OFDM UWB systems with single transmitter and receiver antenna. © 2012 IEEE.
关键词	Bandwidth Bit error rate Broadband networks Channel capacity Channel estimation Data communication systems Data transfer MIMO systems Orthogonal frequency division multiplexing Receiving antennas Signal receivers Signal to noise ratio Transmitters Wave transmission Bit error rate (BER) performance Channel estimation algorithms High-speed data transmission Multi-band orthogonal frequency division multiplexing Multiple input multiple output antennas Signal-to-noise power ratio Transmitter and receiver Ultra Wide Band wireless systems
DOI	10.1109/ICCSEE.2012.26
收录类别	EI
语种	英语
EI入藏号	20122115034442
文献类型	会议论文
条目标识符	http://ir.lzufe.edu.cn/handle/39EH0E1M/9804
专题	信息工程与人工智能学院
作者单位	School of Information Engineering, Lanzhou University of Finance and Economics, Lanzhou, China
推荐引用方式 GB/T 7714	Li, Haiyan. Channel capacity and channel estimation of OFDM ultra-wide-band systems[C]:IEEE Computer Society,2012:152-156.