Signal transmission and reception using multiple antennas
AssigneeZte Corporation
InventorsZhifeng Yuan, Weimin Li, Yuzhou Hu, Xun Yang, Hong Tang, Jianqiang Dai
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Abstract
In an exemplary embodiment, a network node can receive signals from user devices in a wireless communication network. The network node can combine the signals received at each receive antenna of the network node based on vectors from a pre-defined set of vectors. The network node can also process the combined signals to obtain an estimate of the signals.
Claims16
A wireless communication method, comprising:
- receiving, by a network node, signals from user devices in a wireless communication network;
- obtaining combined signals by combining, based on vectors from a pre-defined set of vectors, the signals received by the network node;
- and
- processing the combined signals to obtain an estimate of the signals, wherein the processing of the combined signals comprises:
- de-spreading each combined signal using each spreading code from a set of pre-determined spreading codes;
- performing equalization on each de-spread combined signal to obtain a set of equalized combined signals;
- selecting a subset of equalized combined signals based on signal-to-interference-plus-noise ratio (SINR) values;
- and
- decoding the selected equalized combined signals to obtain the estimate of information bits received from the user devices.
A wireless communication method, comprising:
- generating a transmission signal to transmit from a user device in a wireless communication network,
- wherein the transmission signal includes data for processing by vectors from a set of pre-defined vectors,
- wherein the transmission signal is generated using an access signature selected by the user device,
- wherein the transmission signal is transmitted using a grant free transmission technique,
- wherein the transmission signal includes data that is spread using a spreading code, scrambled using a scrambling code, interleaved using an interleaver, or generated using a differential encoding technique,
- wherein the access signature includes the spreading code, the scrambling code, and the interleaver, and
- wherein the transmission signal includes information related to the spreading code, the scrambling code, or the interleaver.
An apparatus for wireless communication, comprising a memory and a processor, wherein the processor reads code from the memory and implements a method comprising:
- receive, by a network node, signals from user devices in a wireless communication network;
- obtain combined signals by combining, based on vectors from a pre-defined set of vectors, the signals received by the network node;
- and
- process the combined signals to obtain an estimate of the signals, wherein the combined signals are processed by the processor configured to:
- de-spread each combined signal using each spreading code from a set of pre-determined spreading codes;
- perform equalization on each de-spread combined signal to obtain a set of equalized combined signals;
- select a subset of equalized combined signals based on signal-to-interference-plus-noise ratio (SINR) values;
- and
- decode the selected equalized combined signals to obtain the estimate of information bits received from the user devices.
An apparatus for wireless communication, comprising a memory and a processor, wherein the processor reads code from the memory and implements a method comprising:
- generate a transmission signal to transmit from a user device in a wireless communication network,
- wherein the transmission signal includes data for processing by vectors from a set of pre-defined vectors,
- wherein the transmission signal is generated using an access signature selected by the user device,
- wherein the transmission signal is transmitted using a grant free transmission technique,
- wherein the transmission signal includes data that is spread using a spreading code, scrambled using a scrambling code, interleaved using an interleaver, or generated using a differential encoding technique,
- wherein the access signature includes the spreading code, the scrambling code, and the interleaver, and
- wherein the transmission signal includes information related to the spreading code, the scrambling code, or the interleaver.
Dependencies are inferred from the claim text.