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Table 1 Comparison of the main features of MRT-, EGT-, and TR-precoded MISO-OFDM systems

From: Performance of time reversal precoding technique for MISO-OFDM systems

System

Precoding factor

Receive SNR

lim ρ + BER ¯

BER ¯ forN t =2

Exploited

     

diversity

MRT

H m , k λ m

k = 1 N t | H m , k | 2 ρ

( 2 N t ) ! 2 2 N t + 1 ( N t ! ) 2 1 ρ N t

3 16 1 ρ 2

N t

EGT

e Φ H m , k N t

k = 1 N t | H m , k | 2 ρ N t

No general closed form

1 4 1 ρ 2

N t

TR

H m , k N t

k = 1 N t | H m , k | 2 2 ρ N t

1 2 N t + 1 N t 2 ! N t ρ N t 2

1 4 1 ρ

N t 2