Method and device for simulating radio channel

• US 20040088628A1
• Filed: 08/20/2003
• Published: 05/06/2004
• Est. Priority Date: 02/21/2001
• Status: Active Grant

• Current Assignee: Keysight Technologies Singapore Sales Pte Ltd (Keysight Technologies, Inc.)
• Original Assignee: Elektrobit System Test Oy (Keysight Technologies, Inc.)
• Inventors: Meinilä, Juha, Seppälä, Ari, Kemppainen, Juha, Jämsä, Tommi, Harju, Jussi, Poutanen, Torsti
• Granted Patent: US 7,184,720 B2
• Time in Patent Office: Days
• US Class Current: 714/741
• CPC Class Codes: H04B 17/0087 using auxiliary channels or channel simulators

Abstract

The invention relates to a method and device for performing channel simulation, the device comprising a set of channel simulation units (200 to 214) for simulating a radio channel, each unit comprising radio frequency parts (200A to 214A) and baseband parts (200B to 214B). In the solution of the invention, the baseband parts of several different units (200 to 214) are arranged to simulate the same channel.

Claims

1. A device for performing channel simulation, which comprises a set of means (200 to 214) for simulating a radio channel, each means comprising radio frequency parts (200A to 214A) and baseband parts (200B to 214B), characterized in that the baseband parts of several different means (200 to 214) are arranged to simulate the same channel.

2. A device as claimed in claim 1, characterized in that the device comprises control means (242) arranged to connect the inputs and outputs of the baseband parts in such a manner that the baseband parts of several different means are used to simulate the same channel.

3. A device as claimed in claim 1, characterized in that each baseband part comprises a interface module (300) comprising the inputs and outputs of the baseband part, and a digital module (302) comprising means (318 to 332) for simulating a channel.

4. A device as claimed in claim 2, characterized in that the control means (242) are arranged to connect the inputs and outputs of the baseband parts on the basis of the parameters of the simulation being performed.

5. A device as claimed in claim 2, characterized in that the control means (242) are arranged to connect the inputs and outputs of the baseband parts, the radio frequency parts corresponding to which are not needed during the simulation.

6. A device as claimed in claims 2 and 3, characterized in that the inputs and outputs of the simulation means of each digital module are connected to the inputs and outputs of an adjacent digital module.

7. A method for simulating a radio channel, in which

the radio channel is simulated by means of channel elements (200 to 214) that comprise a radio frequency part (200A to 214B) and a baseband part (200B to 214B), characterized by

processing a signal of one radio frequency part in more than one baseband part (200B to 214B).

8. A method as claimed in claim 7, characterized in that the connection of the inputs and outputs of the baseband parts of different channel elements is selected on the basis of the parameters of the simulation being performed.

9. A method as claimed in claim 8, characterized in that the connection is to the baseband parts, the radio frequency parts corresponding to which are not needed during the simulation.

10. A method as claimed in claim 8, characterized in that the used channel model affects the connection.

11. A method as claimed in claim 8, characterized in that the number of channels to simulate affects the connection.

12. A method as claimed in claim 8, characterized in that the number of transmitters and receivers used in the simulation and the connections between them affect the connection.

13. A method as claimed in claim 8, characterized in that the number of channel elements in the device affects the connection.

14. A method as claimed in claim 7, characterized in that the device

checks its configuration after activation,

receives simulation parameters from the user,

selects the connection of the inputs and outputs of the baseband parts of different channel elements on the basis of the simulation parameters,

sets the simulation parameters to different parts of the device, and

performs simulation according to the parameters.