In this paper, we propose a simple packet combining scheme in frequency-hopped spread spectrum multiple access (FH/SSMA) communication networks, which makes a tone-by-tone logical AND operation on the previously combined packet and the currently received (retransmitted) packet. The packet error probability is analyzed in the presence of multiple access interference (MAI) with AWGN or Rayleigh fading. It is found that the number of simultaneous users can be increased almost by a factor of two as compared to the conventional scheme, and the performance improvement becomes more significant, as the number of combined packets is increased. It is also found that for the packet error probability of 10/sup -2/ and M=8, a 2-4 dB gain in E/sub b//N/sub 0/ can be obtained over the conventional scheme in the AWGN and Rayleigh fading channels, and the gain increases as M increases.
展开▼
机译:在本文中,我们提出了一种在跳频扩频多址(FH / SSMA)通信网络中的简单分组组合方案,该方案对先前组合的分组和当前接收到的(重新发送的)分组进行逐音逻辑与运算包。在存在AWGN或瑞利衰落的多址干扰(MAI)的情况下,分析分组错误概率。已经发现,与常规方案相比,同时用户的数量几乎可以增加两倍,并且随着组合分组数量的增加,性能提高变得更加显着。还发现,对于10 / sup -2 /和M = 8的分组错误概率,可以通过AWGN中的常规方案获得E / sub b // N / sub 0 /的2-4 dB增益。和瑞利衰落信道,并且增益随着M的增加而增加。
展开▼