CS-BASED OMNIDIRECTIONAL BEAMFORMING DESIGN METHOD IN UNIFORM RECTANGULAR ARRAYS

• US 20200136697A1
• Filed: 10/21/2019
• Published: 04/30/2020
• Est. Priority Date: 10/27/2018
• Status: Abandoned Application

• Current Assignee: Fudan University
• Original Assignee: Fudan University
• Inventors: JIANG, Yi, SU, Dongliang, WANG, Xin
• Application Number:
  US16/659,439
• Publication Number:
  US 20200136697A1
• Time in Patent Office: Days
• CPC Class Codes: H04B 17/336 Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
• CPC Class Codes: H04B 7/0408 using two or more beams, i.e. beam diversity
• CPC Class Codes: H04B 7/0456 Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
• CPC Class Codes: H04B 7/0617 for beam forming
• CPC Class Codes: H04B 7/0669 using different channel coding between antennas space-time coding H04L1/0618

Abstract

The present invention belongs to the technical field of common signal transmission, and specifically relates to a CS-based omnidirectional beamforming design method in a uniform rectangular array. The main purpose of the present invention is to handle the beamforming design for realizing cell-level coverage in downlink transmission of common signals. For a large-size antenna base station with a uniform rectangular array, the present invention provides two omnidirectional beamforming design schemes: beamforming design based on complementary sequence sets and CCC-based beamforming design. Both schemes can obtain a completely smooth beam pattern in each direction, with low complexity and closed-form solution. Furthermore, most complementary sequence sets and code words of the complete complementary codes show a constant modulus, so that the whole beamforming scheme can be efficiently realized only by using the simulation-domain beamforming architecture. The hardware efficiency is effectively improved.

Claims

1. A CS-based omnidirectional beamforming design method in a uniform rectangular array, comprising:

a first step of, on a base station side consisting of a uniform rectangular large-size antenna array including M antennas, space-time block coding an incoming data flow to be sent, a matrix B used for the space-time block coding having K×

N dimensions, specifically;