Invention Grant
- Patent Title: Precoding and scheduling for a cellular communication system using a large number of base stations antennas
- Patent Title (中): 使用大量基站天线的蜂窝通信系统的预编码和调度
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Application No.: US14081721Application Date: 2013-11-15
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Publication No.: US09479236B2Publication Date: 2016-10-25
- Inventor: Lek (Sirikiat) Ariyavisitakul , Louay Jalloul , Amin Mobasher
- Applicant: Broadcom Corporation
- Applicant Address: US CA Irvine
- Assignee: Broadcom Corporation
- Current Assignee: Broadcom Corporation
- Current Assignee Address: US CA Irvine
- Agency: Sterne, Kessler, Goldstein & Fox, P.L.L.C.
- Main IPC: H04B7/04
- IPC: H04B7/04 ; H04W72/12 ; H04L25/03 ; H04B7/06

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.
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