Hi,(adsbygoogle = window.adsbygoogle || []).push({});

I have the following problem regarding the iterative channel estimation employing LMMSE.

The channel estimation formula is:

H_lmmse,nt,nr,ns=Rhh*Xnt,ns'(sum(Xnt,ns*Rhh*Xnt,ns ')+sigma^2)^-1*Ynr,ns.

Explonation:

Rhh - channel autocorrelation matrix of size KxK (K number of subcarriers)

Xnt,ns - diagonal matrix size Kx, kontaining in its diagonal: pilot symbols, data symbols and zero symbols. nt-Tx antenna index. ns - OFDM symbol index.

sigma-noise variance

sum - goes from 1 to Ntx(for the number of Tx antennas)

Ynr,ns - Rx signal. nr - Rx antenna index.

Is there any posibility to apply the WOODBURY identity to the H_lmmse,nt,nr,ns, and how can this be done?

Thanks in advance

**Physics Forums - The Fusion of Science and Community**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# WOODBURY identity - Iterative LMMSE channel estimation for LTE

Can you offer guidance or do you also need help?

Draft saved
Draft deleted

Loading...

Similar Threads - WOODBURY identity Iterative | Date |
---|---|

I Hurwitz Identity Proof | Jan 22, 2017 |

A Modular Forms: Non-holomorphic Eisenstein Series E2 identity | Nov 7, 2016 |

B Is identity matrix basis dependent? | Oct 14, 2016 |

A What is the identity? | Mar 21, 2016 |

**Physics Forums - The Fusion of Science and Community**