Q. We wish to transmit a digital voice at 32 Kbps through a communication channel having bandwidth of 3000 Hz. The received signal to noise power ratio is 30 dB. State which of the following statement is true ?

• (A) To transmit data error-free through this channel. Channel equalizer circuit should be used at the receiver
• (B) To transmit data error-free through this channel, the voice signal should be compressed by 2
• (C) To transmit data error-free through this channel, a channel code with coding gain of 3 dB should be used
• (D) It is not possible to transmit data error-free through this channel