ATM在无线衰落信道上的前向纠错技术及其性能分析

Performance Analysis of Forward Error Correction Schemes for Wireless ATM Systems in a Rician Fading Channel

无线ATM网络中,无线信道的高误码率和误码的突发性,要求为无线ATM信元提供强的误码保护。本文提出一种有效的FEC方法:对信元字头采用较强的FEC,对信息域分段采用较弱的FEC,并对信元进行全比特交织。文中对这一无线ATM信元在Rician衰落信道上的信元丢失率和信息域误码率进行了分析。

For wireless ATM networks, powerful error control schemes is needed to protect WATM cells because of the high bit error rate and bursts. In this paper, we presented a FEC scheme: to protect WATM cell header with a relatively powerful FEC, and to protect WATM pay- load which is segmented with a relatively weak FEC. Full bit interleaving is used to WATM cells. The cell loss probability and payload packet error rate of the proposect WATM cell is anal ysed in a Rician fading channel.