Interference mitigation study for UWB radio using template waveform processing
Interference mitigation study for UWB radio using template waveform processing
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DOI：
10.1109/tmtt.2006.872046
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发表时间：
2006-04-01
影响因子：
4.3
通讯作者：
Ikegami, T
中科院分区：
文献类型：
--
作者：
Ohno, K;Ikegami, T
超宽带 (UWB) 是一种有效的技术，可以使用非常短的脉冲和扩频与其他无线电系统共存。然而，使用相同频段的用户之间存在潜在的干扰。本文讨论了基于脉冲的 UWB (p-UWB) 与其他系统之间的干扰影响：连续波、二进制相移键控信号、使用 5 GHz 频段的 IEEE802.11a 无线 LAN 以及多频段正交频分复用 (MB-OFDM)。 MB-OFDM 是为个人区域网推论而提出的，p-UWB 也是如此。 FCC 表示 p-UWB 和 MB-OFDM 系统将使用 3.1 至 10.6 GHz 的相同频段。假设 p-UWB 和其他系统在近距离使用，则显示误码率性能。为了减轻其他无线电系统对 p-UWB 的干扰影响，提出了多载波模板波技术。多载波模板波通过Gabor变换公式近似为普通脉冲波形，由多个不存在干扰带的子带脉冲组成。所提出的用于 MB-OFDM 干扰的 IUWB 接收器可以在无需 MB-OFDM 发射器的先验知识的情况下检测其跳频模式。这些技术被证明对于系统共存是有效的。
Ultra-wideband (UWB) is an effective technique that enables coexistence with other radio systems using very short pulses and spread spectrum. However, there are potential interferences among those using the same frequency bands. This paper discusses the effects of interference between pulse-based UWB (p-UWB) and other systems: continuous wave, binary phase-shift keying signal, IEEE802.11a wireless LAN using a 5-GHz band, and multiband orthogonal frequency-division multiplexing (MB-OFDM). The MB-OFDM is inferentially proposed for personal area networks, as is p-UWB. The FCC has stated that both p-UWB and MB-OFDM systems will use the same band from 3.1 to 10.6 GHz. The bit-error-rate performance is shown assuming that p-UWB and the other systems are utilized at close range. To mitigate the effects of interference to p-UWB from other radio systems, a multicarrier template wave technique is proposed. The multicarrier template wave is approximated with an ordinary pulse waveform by Gabor transform formula and is composed of several subband pulses without interfering bands. The proposed IUWB receiver for MB-OFDM interferences can detect their hopping pattern without a priori knowledge from the MB-OFDM transmitter. These techniques are shown to be effective for the systems to coexist.