# GSoC14 MIMO Transeiver

**URL:** <https://www.ruby-forum.com/t/gsoc14-mimo-transeiver/239621>\
**Category:** GNU Radio\
**Created:** [March 7, 2014, 8:30am UTC](https://www.ruby-forum.com/t/gsoc14-mimo-transeiver/239621 "2014-03-07T08:30:32Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![musicdenotation](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/ea666f/32.png) [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\
**Post date:** [March 7, 2014, 8:30am UTC](https://www.ruby-forum.com/t/gsoc14-mimo-transeiver/239621/1 "2014-03-07T08:30:32Z")

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Hello,

We are students of IIIT-Hyderbad, India, doing MS By Research and are  
interested in participating GSoC-14 by building GRC gr-MIMO module.

We are from communication background and have fundamental knowledge of  
MIMO  
and OFDM. Our main research area is to use MIMO technology along with  
concept of cognitive radio in Cellular network. We are well acquainted  
with  
GNU radio and USRP. We have started building our own GRC blocks. Also we  
have all hardwares required for the project i.e. Ettus USRP1, USRP2,  
daughter cards, antennas and currently placed order for OctoClock and N  
series USRPs.

Currently we are implementing Direction Finding using Root Music  
algorithm  
in GNU radio and are trying to build our own block. Our future plan is  
to  
implement MIMO Beamforming which is also one of ideas(MIMO Transceiver)  
for  
GSoC projects.

Below is basic idea which we are planning to implement in GSoC. It will  
be  
nice if you can share your suggestion and ideas, which will help us to  
make  
our draft proposal more meaningful for GSoC.

MRC Decoding:

GRC blocks : Channel Estimation and MRC Combiner.

A channel estimation block will use some pilot signals from transmitter  
to  
estimate channel matrix. Signals will be received from N channels and  
then  
will be combined using MRC followed by appropriate decoding. USRP  
devices  
will be synchronized using MIMO Cable/ Octoclock

MIMO Beamforming:

GRC Block: Alamouti algorithm

Transmit Diversity will be achieved using Alamouti code. Symbols will be  
precoded using Alamouti code and then will transmitted across two  
transmitting antennas simultaneously.

USRP devices will be synchronized using MIMO Cable/ Octoclock.

Thanks and regards,  
Kunal Sankhe