公开(公告)号：US20130182598A1

公开(公告)日：2013-07-18

申请号：US13788743

申请日：2013-03-07

Applicant: QUALCOMM Incorporated

Inventor： Irina MEDVEDEV ,  John W. KETCHUM ,  J. Rodney WALTON

IPC: H04W24/02

CPC classification number: H04W24/02 ,  H04L1/0002 ,  H04L1/0016 ,  H04L1/0019 ,  H04L1/0025 ,  H04L1/06 ,  H04L1/20

Abstract: Techniques to select a suitable transmission mode for a data transmission in a multi channel communication system with multiple spatial channels having varying SNRs are presented in this disclosure. For certain embodiments, a closed-loop technique may be applied, in which back-off factors used to calculate an effective SNR value fed back to a transmitter are adjusted. An open-loop rate control scheme is also presented in which a transmitter may select a data rate and number of streams based on whether transmitted packets are received in error at a receiver.

Abstract translation: 在本公开中提出了在具有变化的SNR的多个空间信道的多通道通信系统中选择用于数据传输的合适传输模式的技术。 对于某些实施例，可以应用闭环技术，其中调整用于计算反馈到发射机的有效SNR值的回退因子。 还提出了一种开环速率控制方案，其中发射机可以基于在接收机处是否发送的分组被错误地接收来选择数据速率和数量的数据流。