公开(公告)号：US20140133417A1

公开(公告)日：2014-05-15

申请号：US14081721

申请日：2013-11-15

Applicant: BROADCOM CORPORATION

Inventor： Lek (Sirikiat) ARIYAVISITAKUL ,  Louay JALLOUL ,  Amin MOBASHER

IPC: H04B7/04 ,  H04W72/12

CPC classification number: H04B7/0452 ,  H04B7/0456 ,  H04B7/0626 ,  H04B7/0632 ,  H04B7/0689 ,  H04L25/03343 ,  H04L25/03942 ,  H04W72/121

Abstract: For an infinite number of transmit antennas at a base station (BS), matched filter (MF) precoding (a type of precoding used to perform SU-MIMO transmission) becomes optimal for performing spatial multiplexing. But observations have shown that precoding types for performing MU-MIMO transmission can perform significantly better than MF precoding for a realizable number of transmit antennas at the BS, even while using the simplest precoding types for MU-MIMO transmission. For large inter-cell interference typically encountered by user terminals (UTs) at or near the boundary of the cell served by the BS, MF precoding can still be used to eliminate or reduce the need for coordination among cells, which consumes network and back-haul resources.

Abstract translation: 对于基站（BS）的无限数量的发射天线，匹配滤波器（MF）预编码（用于执行SU-MIMO传输的预编码的类型）对于执行空间复用是最佳的。 但是观察结果表明，即使在使用MU-MIMO传输的最简单的预编码类型时，用于执行MU-MIMO传输的预编码类型也可以执行明显优于在BS处的可实现数量的发射天线的MF预编码。 对于在由BS服务的小区的边界处或附近的用户终端（UT）通常遇到的大的小区间干扰，MF预编码仍然可以用于消除或减少对小区之间的协调的需要， 运输资源。