Detection method and apparatus for a multi-stream MIMO
First Claim
Patent Images
1. A method, comprising:
- receiving multiple spatial signal streams from a multiple-input multiple output (MIMO) channel; and
pre-ordering said multiple received spatial signal streams based on modulation alphabets of said received spatial signal streams prior to performing a QR Decomposition-M detection.
1 Assignment
0 Petitions
Accused Products
Abstract
In a multiple-input multiple output (MIMO) system, high-rate data transmission is achieved by dividing the original data stream into several parallel data substreams, each of which is transmitted from a corresponding transmit antenna (spatial multiplexing) and received by multiple receive antennas. The number of spatial streams depends on the number of antennas. In a receiver, a search-tree based QR Decomposition-M (QRD-M) algorithm is used. According to the invention, multiple spatial signal streams received from a MIMO channel are pre-ordered based on modulation alphabets of said received spatial signal streams prior to performing a QRD-M detection.
55 Citations
26 Claims
-
1. A method, comprising:
-
receiving multiple spatial signal streams from a multiple-input multiple output (MIMO) channel; and pre-ordering said multiple received spatial signal streams based on modulation alphabets of said received spatial signal streams prior to performing a QR Decomposition-M detection. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A computer program embodied on a computer readable medium, the computer program comprising program code for controlling a processor to execute a method comprising:
-
receiving multiple spatial signal streams from a multiple-input multiple output channel; and pre-ordering said multiple received spatial signal streams based on modulation alphabets of said received spatial signal streams prior to performing a QR Decomposition-M detection.
-
-
12. A computer program embodied on a computer readable medium, the computer program comprising:
-
a component configured to receive multiple spatial signal streams from a multiple-input multiple output channel; and a component configured pre-order said multiple received spatial signal streams based on modulation alphabets of said received spatial signal streams prior to performing a QR Decomposition-M detection.
-
-
13. An apparatus, comprising:
-
a receiver unit configured to receive multiple spatial signal streams from a multiple-input multiple output (MIMO) channel; and a signal processing unit configured to pre-order said multiple received spatial signal streams based on modulation alphabets of said received spatial signal streams prior to performing a QR Decomposition-M detection. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
-
-
25. A wireless mobile terminal comprising:
an apparatus comprising a receiver unit configured to receive multiple spatial signal streams from a multiple-input multiple output (MIMO) channel and a signal processing unit configured to pre-order said multiple received spatial signal streams based on modulation alphabets of said received spatial signal streams prior to performing a QR Decomposition-M detection.
-
26. A wireless base transceiver comprising:
an apparatus comprising a receiver unit configured to receive multiple spatial signal streams from a multiple-input multiple output (MIMO) channel and a signal processing unit configured to pre-order said multiple received spatial signal streams based on modulation alphabets of said received spatial signal streams prior to performing a QR Decomposition-M detection.
Specification