Mimo transmission system in a radio communications network

• US 20040170430A1
• Filed: 12/09/2003
• Published: 09/02/2004
• Est. Priority Date: 06/21/2001
• Status: Active Grant

• Current Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Original Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Inventors: Gorokhov, Alexei
• Granted Patent: US 7,397,826 B2
• Time in Patent Office: Days
• US Class Current: 398/41
• CPC Class Codes: H04L 1/0618 Space-time coding

Abstract

Described is a transmission system (10) for transmitting an information signal (21) via a plurality of subchannels from a transmitter (12) to a receiver (16). The transmitter (12) comprises a demultiplexer (20) for demultiplexing the information signal (21) into a plurality of information subsignals (23). The transmitter (12) further comprises a channel encoder (8) for encoding the information subsignals (23) into encoded information subsignals (25). Each encoded information subsignal (25) is transmitted via one of the subchannels to the receiver (16). The receiver (16) comprises a channel decoder for successively decoding the received encoded information subsignals. The transmission system (10) is characterized in that the demultiplexer (20) is arranged for demultiplexing the information signal (21) into a plurality of partly overlapping information subsignals (23) comprising shared and non-shared information elements. For each subsignal (23) a distribution of the shared information elements is adapted to the throughput of the subchannels as ordered by the receiver (16). The channel decoder is arranged for decoding a received encoded information subsignal by incorporating shared information elements of already decoded information subsignals. In this way, the transmission system can achieve a maximum througput.

Claims

1. A transmission system (10) for transmitting an information signal (21) via a plurality of subchannels from a transmitter (12) to a receiver (16), the transmitter (12) comprising a demultiplexer (20) for demultiplexing the information signal (21) into a plurality of information subsignals (23), the transmitter (12) further comprising a channel encoder (8) for encoding the information subsignals (23) into encoded information subsignals (25), wherein each encoded information subsignal (25) is transmitted via one of the subchannels to the receiver (16), the receiver (16) comprising a channel decoder for successively decoding the received encoded information subsignals, characterized in that the demultiplexer (20) is arranged for demultiplexing the information signal (21) into a plurality of partly overlapping information subsignals (23) comprising shared and non-shared information elements, wherein for each subsignal (23) a distribution of the shared information elements is adapted to the throughput of the subchannels as ordered by the receiver (16), the channel decoder being arranged for decoding a received encoded information subsignal by incorporating shared information elements of already decoded information subsignals.

2. The transmission system (10) according to claim 1, wherein the demultiplexer (20) is arranged for demultiplexing the information signal (21) into the plurality of partly overlapping information subsignals (23) according to the user bit partitioning algorithm.

3. The transmission system (10) according to claim 1 or 2, wherein the transmitter (12) further comprises an interleaver coupled between the demultiplexer (20) and the channel encoder (8), the interleaver being arranged for interleaving the information subsignals (23), wherein the channel encoder (8) is arranged for encoding the interleaved information subsignals into the encoded information subsignals (25).

4. The transmission system (10) according to any one of claims 1 to 3, wherein the channel decoder is arranged for decoding a received encoded information subsignal by incorporating shared information elements of the most recently decoded information subsignal.

5. The transmission system (10) according to any one of claims 1 to 4, wherein the transmission system (10) is a binary transmission system and wherein the information subsignals comprise differently routed binary signals.

6. The transmission system (10) according to any one of claims 1 to 4, wherein the transmission system (10) is a wireless communication system, and wherein the transmitter (12) comprises a plurality of transmit antennas (28), wherein each encoded information subsignal (25) is transmitted via one of the transmit antennas (28) to the receiver (16), and wherein the receiver (16) comprises a plurality of receive antennas (40) for receiving the encoded information subsignals.

7. A transmitter (12) for transmitting an information signal (21) via a plurality of subchannels to a receiver (16), the transmitter (12) comprising a demultiplexer (20) for demultiplexing the information signal (21) into a plurality of information subsignals (23), the transmitter (12) further comprising a channel encoder (8) for encoding the information subsignals (23) into encoded information subsignals (25), wherein each encoded information subsignal (25) is transmitted via one of the subchannels to the receiver (16), characterized in that the demultiplexer (20) is arranged for demultiplexing the information signal (21) into a plurality of partly overlapping information subsignals (23) comprising shared and non-shared information elements, wherein for each subsignal (23) a distribution of the shared information elements is adapted to the throughput of the subchannels as ordered by the receiver (16).

8. The transmitter (12) according to claim 7, wherein the demultiplexer (20) is arranged for demultiplexing the information signal (21) into the plurality of partly overlapping information subsignals (23) according to the user bit partitioning algorithm.

9. The transmitter (12) according to claim 7 or 8, wherein the transmitter (12) further comprises an interleaver coupled between the demultiplexer (20) and the channel encoder (8), the interleaver being arranged for interleaving the information subsignals (23), wherein the channel encoder (8) is arranged for encoding the interleaved information subsignals into the encoded information subsignals.

10. The transmitter (12) according to any one of claims 7 to 9, wherein the transmitter (12) comprises a plurality of transmit antennas (28), and wherein each encoded information subsignal (25) is transmitted via one of the transmit antennas (28) to the receiver (16).

11. A receiver (16) for receiving encoded information subsignals via a plurality of subchannels from a transmitter (12), the receiver (16) comprising a channel decoder for successively decoding the received encoded information subsignals, characterized in that the encoded information subsignals are partly overlapping encoded information subsignals comprising shared and non-shared information elements, wherein for each subsignal (23) a distribution of the shared information elements is adapted to the throughput of the subchannels as ordered by the receiver (16), the channel decoder being arranged for decoding a received encoded information subsignal by incorporating shared information elements of already decoded information subsignals.

12. The receiver (16) according to claim 11, wherein the channel decoder is arranged for decoding a received encoded information subsignal by incorporating shared information elements of the most recently decoded information subsignal.

13. The receiver (16) according to claim 11 or 12, wherein the receiver (16) comprises a plurality of receive antennas (40) for receiving the encoded information subsignals.

14. A method of transmitting an information signal (21) via a plurality of subchannels to a receiver (16), the method comprising:

demultiplexing the information signal (21) into a plurality of information subsignals (23),

encoding the information subsignals (23) into encoded information subsignals (25),

transmitting each encoded information subsignal (25) via one of the subchannels to the receiver (16), characterized in that the information signal (21) is demultiplexed into a plurality of partly overlapping information subsignals (23) comprising shared and non-shared information elements, wherein for each subsignal (23) a distribution of the shared information elements is adapted to the throughput of the subchannels as ordered by the receiver (16).

15. The method of transmitting according to claim 14, wherein the information signal (21) is demultiplexed into the plurality of partly overlapping information subsignals (23) according to the user bit partitioning algorithm.

16. The method of transmitting according to claim 14 or 15, the method further comprising interleaving the information subsignals (23), wherein the interleaved information subsignals are encoded into the encoded information subsignals (25).

17. The method of transmitting according to any one of claims 14 to 16, wherein the encoded information subsignals (25) are transmitted via a plurality of transmit antennas (28) to the receiver (16).

18. A method of receiving encoded information subsignals via a plurality of subchannels from a transmitter (12), the method comprising:

successively decoding the received encoded information subsignals, characterized in that the encoded information subsignals are partly overlapping encoded information subsignals comprising shared and non-shared information elements, a received encoded information subsignal being decoded by incorporating shared information elements of already decoded information subsignals, wherein for each subsignal (23) a distribution of the shared information elements is adapted to the throughput of the subchannels as ordered by the receiver (16).

19. The method of receiving according to claim 18, wherein a received encoded information subsignal is encoded by incorporating shared information elements of the most recently decoded information subsignal.

20. The method of receiving according to claim 18 or 19, wherein the encoded information subsignals are received via a plurality of receive antennas (40).