Method and system for increasing data rate in a mobile terminal using spatial multiplexing for DVB-H communication

• US 7,653,415 B2
• Filed: 09/28/2005
• Issued: 01/26/2010
• Est. Priority Date: 08/21/2002
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: van Rooyen, Pieter
• Primary Examiner(s): Le; Nhan T
• Application Number:
  US11/237,329
• Publication Number:
  US 20070071121A1
• Time in Patent Office: 1,581 Days
• Field of Search: 455/101, 455/103, 455/132, 455/323, 455/333, 455/334, 455/561, 455/562.1, 375/329, 375/332, 375/260, 370315-321
• US Class Current: 455/562.1
• CPC Class Codes: H04K 1/10 by using two signals transmitted simultaneously or successively
• CPC Class Codes: H04L 2027/003 at baseband only
• CPC Class Codes: H04L 25/0204 of multiple channels
• CPC Class Codes: H04L 25/024 channel estimation algorithms
• CPC Class Codes: H04L 27/2626 Arrangements specific to the transmitter only
• CPC Class Codes: H04L 27/2647 Arrangements specific to the receiver only equalisation H04L27/01

Abstract

A method and system for increasing data rate in a mobile terminal using spatial multiplexing for digital video broadcasting for handhelds (DVB-H) communication are provided. A reconfigurable orthogonal frequency division multiplexing (OFDM) chip may be utilized in a mobile terminal to process received spatially multiplexed signals. The mobile terminal may be utilized in a spatially multiplexed multiple-input-multiple-output (SM-MIMO) wireless system. The spatially multiplexed signals may be quadrature phase shift keying (QPSK) modulated and may utilize OFDM subcarries. A processor may be utilized to configure the OFDM chip to process signals such as IEEE 802.11 and 802.16, and DVB. The OFDM chip may generate channel weights to be applied to the spatially multiplexed signals received in multiple receive antennas. The weighted signals may be combined to generate multiple RF received signals from which channel estimates may be generated. Subsequent channel weights may be dynamically generated from generated channel estimates.

Claims

1. A method for handling wireless communication, the method comprising:

applying, within a single chip, at least one of a plurality of channel weights generated within said single chip to at least one of a plurality of spatially multiplexed quadrature phase shift keying (QPSK) modulated signals received via a plurality of antennas in a single orthogonal frequency division multiplexing (OFDM) receiver;

combining said plurality of spatially multiplexed QPSK modulated signals received via said plurality of antennas to generate a plurality of radio frequency (RF) combined received signals;

determining a plurality of channel estimates based on said generated plurality of RF combined received signals; and

determining at least one of a plurality of subsequent channel weights based on said determined plurality of channel estimates.

2. The method according to claim 1, comprising selecting an integration time for determining said plurality of channel estimates.

3. The method according to claim 1, comprising configuring said single chip in said OFDM receiver to handle at least one of a plurality of communication protocols based on OFDM.

4. The method according to claim 3, wherein said at least one of said plurality of communication protocols based on OFDM is an IEEE 802.11 wireless local area network (WLAN) protocol, an IEEE 802.16wireless metropolitan area network (WMAN) protocol, or a digital video broadcasting (DVB) protocol.

5. The method according to claim 1, comprising updating at least a portion of said at least one of said plurality of channel weights dynamically.

6. The method according to claim 5, comprising generating at least one signal that controls said dynamic update of said at least one of a plurality of channel weights.

7. The method according to claim 1, comprising determining a phase and amplitude component for said at least one of said plurality of channel weights.

8. A system for handling wireless communication, the system comprising:

one or more circuits within a single chip that are operable to apply at least one of a plurality of channel weights generated within said single chip to at least one of a plurality of spatially multiplexed quadrature phase shift keying (QPSK) modulated signals received via a plurality of antennas in a single orthogonal frequency division multiplexing (OFDM) receiver;

said one or more circuits within said single chip are operable to combine said plurality of spatially multiplexed QPSK modulated signals received via said plurality of antennas to generate a plurality of radio frequency (RF) combined received signals;

said one or more circuits within said single chip are operable to determine a plurality of channel estimates based on said generated plurality of RF combined received signals; and

said one or more circuits within said single chip are operable to determine at least one of a plurality of subsequent channel weights based on said determined plurality of channel estimates.

9. The system according to claim 8, comprising a processor coupled to said single chip, wherein said processor is operable to select an integration time for determining said plurality of channel estimates.

10. The system according to claim 8, comprising a processor coupled to said single chip, wherein said processor is operable to configure said single chip in said OFDM receiver to handle at least one of a plurality of communication protocols based on OFDM.

11. The system according to claim 10, wherein said at least one of said plurality of communication protocols based on OFDM is an IEEE 802.11wireless local area network (WLAN) protocol, an IEEE 802.16 wireless metropolitan area network (WMAN) protocol, or a digital video broadcasting (DVB) protocol.

12. The system according to claim 8, wherein said one or more circuits within said single chip are operable to update at least a portion of said at least one of said plurality of channel weights dynamically.

13. The system according to claim 12, comprising a processor coupled to said single chip that is operable to generate at least one signal that controls said dynamic update of said at least one of a plurality of channel weights.

14. The system according to claim 8, wherein said one or more circuits within said single chip are operable to determine a phase and amplitude component for said at least one of said plurality of channel weights.