Degrees of Freedom of Generic Block-Fading MIMO Channels without A Priori Channel State Information

نویسندگان

  • Günther Koliander
  • Erwin Riegler
  • Giuseppe Durisi
  • Franz Hlawatsch
چکیده

We study the high-SNR capacity of generic MIMO Rayleigh block-fading channels in the noncoherent setting where neither transmitter nor receiver has a priori channel state information but both are aware of the channel statistics. In contrast to the well-established constant block-fading model, we allow the fading to vary within each block with a temporal correlation that is “generic” (in the sense used in the interferencealignment literature). We show that the number of degrees of freedom of a generic MIMO Rayleigh block-fading channel with T transmit antennas and block length N is given by T (1−1/N) provided that T < N and the number of receive antennas is at least T (N − 1)/(N −T ). A comparison with the constant blockfading channel (where the fading is constant within each block) shows that, for large block lengths, generic correlation increases the number of degrees of freedom by a factor of up to four.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

The Degrees of Freedom of MIMO Interference Channels without State Information at Transmitters

This paper fully determines the degree-of-freedom (DoF) region of two-user interference channels with arbitrary number of transmit and receive antennas in the case of isotropic and independent (or block-wise independent) fading, where the channel state information is available to the receivers but not to the transmitters. The result characterizes the capacity region to the first order of the lo...

متن کامل

Single-Carrier Frequency-Domain Equalization for Orthogonal STBC over Frequency-Selective MIMO-PLC channels

In this paper we propose a new space diversity scheme for broadband PLC systems using orthogonal space-time block coding (OSTBC) transmission combined with single-carrier frequency-domain equalization (SC-FDE). To apply this diversity technique to PLC channels, we first propose a new technique for combining SC-FDE with OSTBCs applicable to all dispersive multipath channels impaired by impulsive...

متن کامل

The Degrees of Freedom Regions of MIMO Broadcast, Interference, and Cognitive Radio Channels with No CSIT

The degrees of freedom (dof) regions are characterized for the multiple-input multipleoutput (MIMO) broadcast channel (BC), the interference channel (IC), and the cognitive radio channel (CRC) when there is perfect and no channel state information at the receivers and the transmitter(s) (CSIR and CSIT), respectively. For the K-user MIMO BC, the exact characterization of the dof region is obtain...

متن کامل

Joint Source-Channel Codes for MIMO Block Fading Channels

We consider transmission of a continuous amplitude i.i.d source over an L-block Rayleigh fading Mt × Mr MIMO channel when the transmitter has no channel state information. Due to strict delay requirements Shannon’s source-channel separation theorem becomes obsolete and the optimal performance requires a joint optimization of the source and channel variables. Our goal is to minimize the expected...

متن کامل

Degrees of Freedom for Instantaneous-Relay Aided Interference Channel: Bounds and Achievable Schemes

The K-user flat fading MIMO interference channel with J instantaneous relays (KICJR) is considered. In the KICJR, the effective channel between sources and destinations including the relays has certain structure and is non-generic. For non-generic channels, the achievable degrees of freedom (DoF) is still unknown. Lee and Wang showed that by using the aligned interference neutralization scheme ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:
  • IEEE Trans. Information Theory

دوره 60  شماره 

صفحات  -

تاریخ انتشار 2014