Multiple streams using partial STBC with SDM within a wireless local area network

US 7,561,631 B2
Filed: 12/09/2004
Issued: 07/14/2009
Est. Priority Date: 08/25/2004
Status: Active Grant

First Claim

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1. A method of communicating data to M receiving antennas from N transmitting antennas, where M and N are integers, the method comprising:

receiving M data signals from M receive antennas;

applying the M data signals to a space/time decoder to produce M decoded streams; and

reconstructing original data transmitted via N transmit antennas of the N transmitting antennas from the M decoded streams;

wherein at least P transmitting antennas of the N transmitting antennas transmit space-time block-coded signals and (N-P) transmitting antennas transmit code signals through spatial division multiplexing, where P is an integer.

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Abstract

A method of communicating data to M receiving antennas from N transmitting antennas, where M and N are integers, the method includes the steps of receiving M data signals from M receive antennas, applying the M data signals to a space/time decoder to produce M decoded streams and reconstructing original data transmitted via N transmit antennas from the M decoded streams. At least P transmitting antennas transmit space-time block-coded signals and (N-P) transmitting antennas transmit code signals through spatial division multiplexing, where P is an integer.

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24 Claims

1. A method of communicating data to M receiving antennas from N transmitting antennas, where M and N are integers, the method comprising:
- receiving M data signals from M receive antennas;
  
  applying the M data signals to a space/time decoder to produce M decoded streams; and
  
  reconstructing original data transmitted via N transmit antennas of the N transmitting antennas from the M decoded streams;
  
  wherein at least P transmitting antennas of the N transmitting antennas transmit space-time block-coded signals and (N-P) transmitting antennas transmit code signals through spatial division multiplexing, where P is an integer.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- - 2. The method of claim 1, wherein reconstructing of original data comprises determining a number of transmit streams and configurations of those transmit streams through analysis of the M decoded streams.
  - 3. The method of claim 1, wherein P comprises two and the receiving of M data signals comprises receiving two space-time block-coded signals.
  - 4. The method of claim 3, wherein N comprises three and the receiving of M data signals comprises receiving a repetition code signal.
  - 5. A method according to claim 1, wherein the reconstructing of original data comprises zero-forcing terms equivalent to relationships between signals sent from the N transmitting antennas to the M receiving antennas to cancel interference.
  - 6. A method according to claim 5, wherein the relationships comprise:
    - $[\begin{matrix} r_{1} \\ r_{2} \end{matrix}] = [\begin{matrix} H_{1} & G_{1} \\ H_{2} & G_{2} \end{matrix}] [\begin{matrix} c_{1} \\ c_{2} \end{matrix}] + [\begin{matrix} n_{1} \\ n_{2} \end{matrix}] where, c_{1} = [\begin{matrix} c_{1} (t_{0}) \\ c_{1} (t_{1}) \end{matrix}], c_{2} = [c_{2} (t_{0})], r_{1} = [\begin{matrix} r_{1} (t_{1}) \\ r_{1}^{*} (t_{2}) \end{matrix}], r_{2} = [\begin{matrix} r_{2} (t_{1}) \\ r_{2}^{*} (t_{2}) \end{matrix}], H_{i} = [\begin{matrix} h_{1 i} & h_{2 i} \\ h_{2 i}^{*} & - h_{1 i}^{*} \end{matrix}], G_{i} = [\begin{matrix} g_{i} \\ g_{i}^{*} \end{matrix}],$ where r_i(t) and c_i(t) are the received and transmitted signals, respectively, n_irepresent noise terms and G_iand H_irepresent relationships between signals sent from three transmit antennas to two receive antennas.
  - 7. A method according to claim 5, wherein the relationships comprise:
    - ${[\begin{matrix} r_{1} \\ r_{2} \end{matrix}]}_{4 \times 1} = {{[\begin{matrix} H_{1} & G_{1} \\ H_{2} & G_{2} \end{matrix}]}_{4 \times 4} [\begin{matrix} c_{1} \\ c_{2} \end{matrix}]}_{4 \times 1} + {[\begin{matrix} n_{1} \\ n_{2} \end{matrix}]}_{4 \times 1} where, c_{1} = [\begin{matrix} c_{1} (t_{0}) \\ c_{2} (t_{0}) \end{matrix}], c_{2} = [\begin{matrix} c_{3} (t_{0}) \\ c_{4} (t_{0}) \end{matrix}], r_{1} = [\begin{matrix} r_{1} (t_{0}) \\ r_{1}^{*} (t_{1}) \end{matrix}], r_{2} = [\begin{matrix} r_{2} (t_{0}) \\ r_{2}^{*} (t_{1}) \end{matrix}], H_{i} = [\begin{matrix} h_{1 i} & h_{2 i} \\ h_{2 i}^{*} & - h_{1 i}^{*} \end{matrix}], G_{i} = [\begin{matrix} g_{i} & 0 \\ 0 & g_{i}^{*} \end{matrix}]$ where r_i(t) and c_i(t) are the received and transmitted signals, respectively, n_irepresent noise terms and G_iand H_irepresent relationships between signals sent three transmit antennas to two receive antennas.
  - 8. A method according to claim 5, wherein the relationships comprise:
    - ${[\begin{matrix} r_{1} \\ r_{2} \\ r_{3} \end{matrix}]}_{6 \times 1} = {{[\begin{matrix} H_{1} & G_{1} \\ H_{2} & G_{2} \\ H_{3} & G_{3} \end{matrix}]}_{6 \times 6} [\begin{matrix} c_{1} \\ c_{2} \\ c_{3} \end{matrix}]}_{6 \times 1} + {[\begin{matrix} n_{1} \\ n_{2} \\ n_{3} \end{matrix}]}_{6 \times 1} where, c_{1} = [\begin{matrix} c_{1} (t_{0}) \\ c_{2} (t_{0}) \end{matrix}], c_{2} = [\begin{matrix} c_{3} (t_{0}) \\ c_{4} (t_{0}) \end{matrix}], c_{3} = [\begin{matrix} c_{5} (t_{0}) \\ c_{6} (t_{0}) \end{matrix}], r_{1} = [\begin{matrix} r_{1} (t_{0}) \\ r_{1}^{*} (t_{1}) \end{matrix}], r_{2} = [\begin{matrix} r_{2} (t_{0}) \\ r_{2}^{*} (t_{1}) \end{matrix}], r_{3} = [\begin{matrix} r_{3} (t_{0}) \\ r_{3}^{*} (t_{1}) \end{matrix}], H_{i} = [\begin{matrix} h_{1 i} & h_{2 i} \\ h_{2 i}^{*} & - h_{1 i}^{*} \end{matrix}], G_{i} = [\begin{matrix} g_{1 i} & 0 & g_{2 i} & 0 \\ 0 & g_{1 i}^{*} & 0 & g_{2 i}^{*} \end{matrix}]$ where r_i(t) and c_i(t) are the received and transmitted signals, respectively, n_irepresent noise terms and G_iand H_irepresent relationships between signals sent from four transmit antennas to three receive antennas.

9. A receiver for communicating data from N transmitting antennas to M receiving antennas, where M and N are integers, comprising:
- receiving means for receiving M data signals via M receive antennas;
  
  applying means for applying the M data signals to a space/time decoder to produce M decoded streams; and
  
  reconstructing means for reconstructing original data transmitted via N transmit antennas from the M decoded streams;
  
  wherein at least P transmitting antennas of the N transmitting antennas transmit space-time block-coded signals and (N-P) transmitting antennas of the N transmitting antennas transmit code signals through spatial division multiplexing, where P is an integer.
- View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
- - 10. The reciever of claim 9, wherein the reconstructing means comprises determining means for determining a number of transmit streams and configurations of those transmit streams through analysis of the M decoded streams.
  - 11. The receiver of claim 9, wherein P comprises two and the receiving means comprise means for receiving two space-time block-coded signals.
  - 12. The receiver of claim 11, wherein N comprises three and the receiving means comprise means for receiving a repetition code signal.
  - 13. A receiver according to claim 9, wherein the applying means further comprises zero-forcing means for zero-forcing terms equivalent to relationships between signals sent from the N transmitting antennas to the M receiving antennas to cancel interference.
  - 14. A receiver according to claim 13, wherein the relationships comprise:
    - $[\begin{matrix} r_{1} \\ r_{2} \end{matrix}] = [\begin{matrix} H_{1} & G_{1} \\ H_{2} & G_{2} \end{matrix}] [\begin{matrix} c_{1} \\ c_{2} \end{matrix}] + [\begin{matrix} n_{1} \\ n_{2} \end{matrix}] where, c_{1} = [\begin{matrix} c_{1} (t_{0}) \\ c_{1} (t_{1}) \end{matrix}], c_{2} = [c_{2} (t_{0})], r_{1} = [\begin{matrix} r_{1} (t_{1}) \\ r_{1}^{*} (t_{2}) \end{matrix}], r_{2} = [\begin{matrix} r_{2} (t_{1}) \\ r_{2}^{*} (t_{2}) \end{matrix}], H_{i} = [\begin{matrix} h_{1 i} & h_{2 i} \\ h_{2 i}^{*} & - h_{1 i}^{*} \end{matrix}], G_{i} = [\begin{matrix} g_{i} \\ g_{i}^{*} \end{matrix}],$ where r_i(t) and c_i(t) are the received and transmitted signals, respectively, n_irepresent noise terms and G_iand H_irepresent relationships between signals sent from three transmit antennas to two receive antennas.
  - 15. A receiver according to claim 13, wherein the relationships comprise:
    - ${[\begin{matrix} r_{1} \\ r_{2} \end{matrix}]}_{4 \times 1} = {{[\begin{matrix} H_{1} & G_{1} \\ H_{2} & G_{2} \end{matrix}]}_{4 \times 4} [\begin{matrix} c_{1} \\ c_{2} \end{matrix}]}_{4 \times 1} + {[\begin{matrix} n_{1} \\ n_{2} \end{matrix}]}_{4 \times 1} where, c_{1} = [\begin{matrix} c_{1} (t_{0}) \\ c_{2} (t_{0}) \end{matrix}], c_{2} = [\begin{matrix} c_{3} (t_{0}) \\ c_{4} (t_{0}) \end{matrix}], r_{1} = [\begin{matrix} r_{1} (t_{0}) \\ r_{1}^{*} (t_{1}) \end{matrix}], r_{2} = [\begin{matrix} r_{2} (t_{0}) \\ r_{2}^{*} (t_{1}) \end{matrix}], H_{i} = [\begin{matrix} h_{1 i} & h_{2 i} \\ h_{2 i}^{*} & - h_{1 i}^{*} \end{matrix}], G_{i} = [\begin{matrix} g_{i} & 0 \\ 0 & g_{i}^{*} \end{matrix}]$ where r_i(t) and c_i(t) are the received and transmitted signals, respectively, n_irepresent noise terms and G_iand H_irepresent relationships between signals sent three transmit antennas to two receive antennas.
  - 16. A receiver according to claim 13, wherein the relationships comprise:
    - ${[\begin{matrix} r_{1} \\ r_{2} \\ r_{3} \end{matrix}]}_{6 \times 1} = {{[\begin{matrix} H_{1} & G_{1} \\ H_{2} & G_{2} \\ H_{3} & G_{3} \end{matrix}]}_{6 \times 6} [\begin{matrix} c_{1} \\ c_{2} \\ c_{3} \end{matrix}]}_{6 \times 1} + {[\begin{matrix} n_{1} \\ n_{2} \\ n_{3} \end{matrix}]}_{6 \times 1} where, c_{1} = [\begin{matrix} c_{1} (t_{0}) \\ c_{2} (t_{0}) \end{matrix}], c_{2} = [\begin{matrix} c_{3} (t_{0}) \\ c_{4} (t_{0}) \end{matrix}], c_{3} = [\begin{matrix} c_{5} (t_{0}) \\ c_{6} (t_{0}) \end{matrix}], r_{1} = [\begin{matrix} r_{1} (t_{0}) \\ r_{1}^{*} (t_{1}) \end{matrix}], r_{2} = [\begin{matrix} r_{2} (t_{0}) \\ r_{2}^{*} (t_{1}) \end{matrix}], r_{3} = [\begin{matrix} r_{3} (t_{0}) \\ r_{3}^{*} (t_{1}) \end{matrix}], H_{i} = [\begin{matrix} h_{1 i} & h_{2 i} \\ h_{2 i}^{*} & - h_{1 i}^{*} \end{matrix}], G_{i} = [\begin{matrix} g_{1 i} & 0 & g_{2 i} & 0 \\ 0 & g_{1 i}^{*} & 0 & g_{2 i}^{*} \end{matrix}]$ where r_i(t) and c_i(t) are the received and transmitted signals, respectively, n_irepresent noise terms and G_iand H_irepresent relationships between signals sent from four transmit antennas to three receive antennas.

17. A receiver for communicating data from N transmitting antennas to M receiving antennas, where M and N are integers, comprising:
- M receive antennas, for receiving M data signals;
  
  a space/time decoder, configured to produce M decoded streams based on the M data signals; and
  
  symbol demapping modules, configured to reconstruct original data transmitted via N transmit antennas from the M decoded streams;
  
  wherein at least P transmitting antennas of the N transmitting antennas transmit space-time block-coded signals and (N-P) transmitting antennas of the N transmitting antennas transmit code signals through spatial division multiplexing, where P is an integer.
- View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
- - 18. The reciever of claim 17, wherein the space/time decoder is configured to determine a number of transmit streams and configurations of those transmit streams through analysis of the M decoded streams.
  - 19. The receiver of claim 17, wherein P comprises two and the space/time decoder is configured to receive two space-time block-coded signals.
  - 20. The receiver of claim 19, wherein N comprises three and the space/time decoder is configured to receive a repetition code signal.
  - 21. A receiver according to claim 17, wherein the space/time decoder is configured to zero-force terms equivalent to relationships between signals sent from the N transmitting antennas to the M receiving antennas to cancel interference.
  - 22. A receiver according to claim 21, wherein the relationships comprise:
    - $[\begin{matrix} r_{1} \\ r_{2} \end{matrix}] = [\begin{matrix} H_{1} & G_{1} \\ H_{2} & G_{2} \end{matrix}] [\begin{matrix} c_{1} \\ c_{2} \end{matrix}] + [\begin{matrix} n_{1} \\ n_{2} \end{matrix}] where, c_{1} = [\begin{matrix} c_{1} (t_{0}) \\ c_{1} (t_{1}) \end{matrix}], c_{2} = [c_{2} (t_{0})], r_{1} = [\begin{matrix} r_{1} (t_{1}) \\ r_{1}^{*} (t_{2}) \end{matrix}], r_{2} = [\begin{matrix} r_{2} (t_{1}) \\ r_{2}^{*} (t_{2}) \end{matrix}], H_{i} = [\begin{matrix} h_{1 i} & h_{2 i} \\ h_{2 i}^{*} & - h_{1 i}^{*} \end{matrix}], G_{i} = [\begin{matrix} g_{i} \\ g_{i}^{*} \end{matrix}],$ where r_i(t) and c_i(t) are the received and transmitted signals, respectively, n_irepresent noise terms and G_iand H_irepresent relationships between signals sent from three transmit antennas to two receive antennas.
  - 23. A receiver according to claim 21, wherein the relationships comprise:
    - ${[\begin{matrix} r_{1} \\ r_{2} \end{matrix}]}_{4 \times 1} = {{[\begin{matrix} H_{1} & G_{1} \\ H_{2} & G_{2} \end{matrix}]}_{4 \times 4} [\begin{matrix} c_{1} \\ c_{2} \end{matrix}]}_{4 \times 1} + {[\begin{matrix} n_{1} \\ n_{2} \end{matrix}]}_{4 \times 1} where, c_{1} = [\begin{matrix} c_{1} (t_{0}) \\ c_{2} (t_{0}) \end{matrix}], c_{2} = [\begin{matrix} c_{3} (t_{0}) \\ c_{4} (t_{0}) \end{matrix}], r_{1} = [\begin{matrix} r_{1} (t_{0}) \\ r_{1}^{*} (t_{1}) \end{matrix}], r_{2} = [\begin{matrix} r_{2} (t_{0}) \\ r_{2}^{*} (t_{1}) \end{matrix}], H_{i} = [\begin{matrix} h_{1 i} & h_{2 i} \\ h_{2 i}^{*} & - h_{1 i}^{*} \end{matrix}], G_{i} = [\begin{matrix} g_{i} & 0 \\ 0 & g_{i}^{*} \end{matrix}]$ where r_i(t) and c_i(t) are the received and transmitted signals, respectively, n_irepresent noise terms and G_iand H_irepresent relationships between signals sent three transmit antennas to two receive antennas.
  - 24. A receiver according to claim 21, wherein the relationships comprise:
    - ${[\begin{matrix} r_{1} \\ r_{2} \\ r_{3} \end{matrix}]}_{6 \times 1} = {{[\begin{matrix} H_{1} & G_{1} \\ H_{2} & G_{2} \\ H_{3} & G_{3} \end{matrix}]}_{6 \times 6} [\begin{matrix} c_{1} \\ c_{2} \\ c_{3} \end{matrix}]}_{6 \times 1} + {[\begin{matrix} n_{1} \\ n_{2} \\ n_{3} \end{matrix}]}_{6 \times 1} where, c_{1} = [\begin{matrix} c_{1} (t_{0}) \\ c_{2} (t_{0}) \end{matrix}], c_{2} = [\begin{matrix} c_{3} (t_{0}) \\ c_{4} (t_{0}) \end{matrix}], c_{3} = [\begin{matrix} c_{5} (t_{0}) \\ c_{6} (t_{0}) \end{matrix}], r_{1} = [\begin{matrix} r_{1} (t_{0}) \\ r_{1}^{*} (t_{1}) \end{matrix}], r_{2} = [\begin{matrix} r_{2} (t_{0}) \\ r_{2}^{*} (t_{1}) \end{matrix}], r_{3} = [\begin{matrix} r_{3} (t_{0}) \\ r_{3}^{*} (t_{1}) \end{matrix}], H_{i} = [\begin{matrix} h_{1 i} & h_{2 i} \\ h_{2 i}^{*} & - h_{1 i}^{*} \end{matrix}], G_{i} = [\begin{matrix} g_{1 i} & 0 & g_{2 i} & 0 \\ 0 & g_{1 i}^{*} & 0 & g_{2 i}^{*} \end{matrix}]$ where r_i(t) and c_i(t) are the received and transmitted signals, respectively, n_irepresent noise terms and G_iand H_irepresent relationships between signals sent from four transmit antennas to three receive antennas.

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Current Assignee
Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
Original Assignee
Broadcom Corporation (Broadcom, Inc.)
Inventors
Kim, Joonsuk
Primary Examiner(s)
PHU, PHUONG M

Application Number

US11/007,758
Publication Number

US 20060045199A1
Time in Patent Office

1,678 Days
Field of Search

375/267, 375/260, 375/299, 375/347, 375/346, 375/349, 370/208
US Class Current

375/267
CPC Class Codes

H04L 1/0631   Receiver arrangements

H04L 1/0643   block codes

H04L 1/08   by repeating transmission, ...

Multiple streams using partial STBC with SDM within a wireless local area network

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Multiple streams using partial STBC with SDM within a wireless local area network

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