Condition number variability of ultra wideband MIMO on body channels

This paper presents, condition number (CN) variability of ultra wideband 2 × 2 multiple-input-multiple-output (MIMO) on-body channels for four different links namely; waist-to-wrist, waist-to-back, waist-to-chest and waist-to-ankle. The relationship between condition number, capacity and signal to noise ratio is studied and results indicate that for fixed value of signal to noise ratio (SNR), the capacity decreases with increasing CN, whereas for fixed values of capacity, SNR increases with CN. For high SNR (> 8 dB), the correlation becomes negative, which means that for the fixed CN, the capacity increases with increasing SNR.