Multi-band UWB system with Hadamard coding

Xingxin Gao, Richard Yao, Zhenming Feng

Research output: Contribution to journalConference articlepeer-review

Abstract

In this paper, a new multi-band ultra wideband (UWB) system with Hadamard coding, namely, MB-H-UWB, is proposed. The ultra-wide bandwidth is divided into M sub-bands. The sub-bands are then coded with Hadamard codes. In this way, the frequency diversity is obtained. Transmitted data bits are modulated in the corresponding coded sub-bands. Both single and multiple user system are considered in this paper. Random time-hopping sequence is used for the multi-user access. Simulation results show that the proposed MB-H-UWB system can accomplish a 1.7dB gain of SNR for single-user, and 2.8dB gain and 4dB gain for 10 active user and 20 active users, respectively, over BPSK-UWB system in AWGN channel with the targeted uncoded Bit Error Rate (BER) of 10-3. Simulation results also show that the proposed MB-H-UWB system outperforms BPSK-UWB system by 2dB in an indoor multipath propagation channel. The performance gain of the MB-H-UWB system can benefit range extension and higher throughput for UWB communication systems. Moreover, the proposed system requires less Rake receiver fingers than the single-band (7.5GHz bandwidth) UWB system so that the complexity of receiver can be reduced significantly.

Original languageEnglish (US)
Pages (from-to)1288-1292
Number of pages5
JournalIEEE Vehicular Technology Conference
Volume58
Issue number2
StatePublished - Dec 1 2003
Event2003 IEEE 58th Vehicular Technology Conference, VTC2003-Fall - Orlando, FL, United States
Duration: Oct 6 2003Oct 9 2003

Keywords

  • Hadamard code
  • Multi-band
  • UWB

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

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