公开(公告)号：WO2017173389A1

公开(公告)日：2017-10-05

申请号：PCT/US2017/025578

申请日：2017-03-31

Applicant: COHERE TECHNOLOGIES

Inventor： HADANI, Ronny ,  KNOS, Shachar

IPC: H04L27/01 ,  H03D1/04 ,  H03D1/06 ,  H04L25/00 ,  H04L25/08

Abstract: An iterative two dimension equalizer usable in a receiver of orthogonal time frequency space (OTFS) modulated signals is described. In one configuration of the equalizer, a forward path generates, from received time-frequency domain samples and a channel estimate, estimates of data bits and likelihood numbers associated with the estimates of data bits, generated by delay -Doppler domain processing. In the feedback direction, the estimates of data bits are used to generate symbol estimates and autocorrelation matrix estimate in the time domain. In another configuration, a soft symbol mapper is used in the feedback direction for directly generating the feedback input symbol estimate without having to generate estimates of data bits.

Abstract translation: 描述了可用于正交时间频率空间（OTFS）调制信号的接收器中的迭代二维均衡器。 在均衡器的一种配置中，正向路径从接收到的时间 - 频率域采样和信道估计生成由延迟 - 多普勒域处理生成的与数据比特的估计相关联的数据比特和似然数的估计。 在反馈方向上，数据位的估计被用于在时域中生成符号估计和自相关矩阵估计。 在另一种配置中，在反馈方向上使用软符号映射器来直接生成反馈输入符号估计，而不必生成数据比特的估计。