Transmission and/or reception process with high channel capacity, transmitter and/or receiver, and mobile terminal

• US 8,295,785 B2
• Filed: 07/26/2005
• Issued: 10/23/2012
• Est. Priority Date: 10/25/2004
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Lillie, Frank
• Primary Examiner(s): Nguyen, Duc
• Assistant Examiner(s): Jain, Ankur
• Application Number:
  US11/577,971
• Publication Number:
  US 20090156140A1
• Time in Patent Office: 2,646 Days
• Field of Search: 455/90.2
• US Class Current: 455/90.2
• CPC Class Codes: H04W 52/0238 where the received signal is an unwanted signal, e.g. interference or idle signal
• CPC Class Codes: H04W 52/0283 with sequential power up or power down of successive circuit blocks, e.g. switching on the local oscillator before RF or mixer stages
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A transmission and/or reception process with high channel capacity uses a multiple transmitter and/or receiver system, and signal processing undergoes phases of temporary switching-off. Also disclosed arm corresponding transmitters and/or receivers, as well as a mobile terminal. In order to provide a process, a device and a mobile terminal of the above-mentioned type which improve communication reliability with high spectral efficiency using multipath propagation, it is proposed that the mixer units (5) be initialized when signal processing is turned on.

Claims

1. A method of operating a system in which a signal processing device is subject to phases of temporary disconnections, the method comprising:

switching on the signal processing device;

in response to the signal processing device being switched on, causing an initialization circuit to initialize a first mixer unit and a second mixer unit, the first mixer unit comprising a first mixer, a second mixer and a first frequency converter, the first frequency converter of the first mixer unit being connected to the initialization circuit, the second mixer unit comprising a third mixer, a fourth mixer and a second frequency converter, the second frequency converter of the second mixer unit being connected to the initialization circuit;

wherein the initialization circuit initializes the first mixer unit and the second mixer unit using a reset signal which simultaneously addresses the first mixer unit of a first data processing path and the second mixer unit of a second data processing path, the first data processing path being arranged in parallel to the second data processing path;

wherein the first frequency converter and the second frequency converter each receive a signal from an oscillator circuit.

2. The method of claim 1, wherein the phases of temporary disconnections correspond to transmitting and/or receiving signals in defined time slots.

3. The method of claim 1, wherein the first frequency converter and the second frequency converter each receive the reset signal.

4. The method of claim 1, wherein:

the first mixer unit includes a first phase shifter; and

the second mixer unit includes a second phase shifter.

5. The method of claim 1, wherein:

the first frequency converter includes a first regenerative divider; and

the second frequency converter includes a second regenerative divider.

6. A device with high channel capacity in a form of a multi-transmitter and/or multi-receiver system in which antennas are arranged in a spatially distributed manner, the device comprising:

a signal processing device, the signal processing device configured to switch between being connected and being disconnected;

an initialization circuit;

a first mixer unit on a first receiving and/or transmitting path, the first mixer unit including a first mixer, a second mixer and a first frequency converter, the first frequency converter of the first mixer unit being connected to the initialization circuit;

a second mixer unit on a second receiving and/or transmitting path, the second mixer unit including a third mixer, a fourth mixer and a second frequency converter, the second frequency converter of the second mixer unit being connected to the initialization circuit; and

an oscillator circuit coupled to the first frequency converter and the second frequency converter;

wherein the initialization circuit is configured to initialize the first mixer unit and the second mixer unit when the signal processing device is switched on;

wherein the initialization circuit initializes the first mixer unit and the second mixer unit using a reset signal which simultaneously addresses the first mixer unit of a first data processing path and the second mixer unit of a second data processing path, the first data processing path being arranged in parallel to the second data processing path.

7. The device of claim 6, wherein:

the first receiving and/or transmitting path and the second receiving and/or transmitting path are arranged in parallel.

8. The device of claim 6, wherein the first frequency converter includes a first regenerative divider and the second frequency converter includes a second regenerative divider, first and second regenerative dividers configured to adjust arbitrary divider ratios in the first mixer unit and the second mixer unit, respectively.

9. The device of claim 6, wherein the first mixer unit includes a first phase shifter and the second mixer unit includes a second phase shifter.

10. A mobile terminal comprising:

a signal processing device, the signal processing device configured to switch between being connected and being disconnected; and

a receiver circuit comprising;

an initialization circuit;

a first mixer unit on a first individual receiving and/or transmitting path, the first mixer unit including a first mixer, a second mixer and a first frequency converter, the first frequency converter of the first mixer unit being connected to the initialization circuit;

a second mixer unit on a second receiving and/or transmitting path, the first mixer unit including a third mixer, a fourth mixer and a second frequency converter, the second frequency converter of the second mixer unit being connected to the initialization circuit; and

an oscillator circuit coupled to the first frequency converter and the second frequency converter;

wherein the initialization circuit is configured to initialize the first mixer unit and the second mixer unit when the signal processing device is switched on;

wherein the initialization circuit initializes the first mixer unit and the second mixer unit using a reset signal which simultaneously addresses the first mixer unit of a first data processing path and the second mixer unit of a second data processing path, the first data processing path being arranged in parallel to the second data processing path.

11. The mobile terminal of claim 10, wherein the first frequency converter includes a first regenerative divider and the second frequency converter includes a second regenerative divider.

12. The mobile terminal of claim 11, wherein the first and second regenerative dividers are configured to adjust arbitrary divider ratios in the first mixer unit and the second mixer unit, respectively.

13. The mobile terminal of claim 10, wherein the first receiving and/or transmitting path and the second receiving and/or transmitting path are arranged in parallel.

14. Th mobile terminal of claim 10, wherein the first mixer unit includes a first phase shifter and the second mixer unit includes a second phase shifter.