Title :
Capacity Achieving Pilot Design for MIMO-OFDM over Time-Varying Frequency-Selective Channels
Author :
Cosovic, I. ; Auer, Gunther
Author_Institution :
DoCoMo Euro-Labs, Munich
Abstract :
In this paper we analyze the capacity of MIMO-OFDM systems that utilize pilot symbols to acquire estimation of the radio channel at the receiver. An analytical framework is developed to derive the optimal pilot boost and optimal pilot overhead over time-variant frequency selective channels. In addition, to illustrate the achievable capacity, several numerical examples are given assuming different pilot boosts, pilot overheads, and number of transmit antennas.
Keywords :
MIMO communication; OFDM modulation; channel capacity; channel estimation; time-varying channels; wireless channels; MIMO-OFDM; pilot overheads; radio channel estimation; time-variant frequency selective channels; transmit antennas; Channel estimation; Discrete Fourier transforms; Fading; Finite impulse response filter; Frequency estimation; Interpolation; Nonlinear filters; OFDM; Receivers; Receiving antennas;
Conference_Titel :
Communications, 2007. ICC '07. IEEE International Conference on
Conference_Location :
Glasgow
Print_ISBN :
1-4244-0353-7
DOI :
10.1109/ICC.2007.133
