Direct sequence is a method of spread spectrum radio communications which spreads data over several bands of radio frequency. This can accomplish one of two things: firstly, this can be used in the same manner as RAID striping mode; that is, each channel may be used to send different data, and the receiver may be forced to put it all together at the end. Secondly, it may be used in the same manner as RAID mirroring; that is to say that each channel may have the same data transmitted, and the receiver must decide, from all the symbols received, what the transmitter was trying to send.

Both of these methods require multiple tuners and transmitters, making them expensive. Neither is more secure than standard singleband radio communications. Redundant method can be more interference-resistant than frequency-hopping, but still is nowhere near as secure. Striped method can be as many times faster than frequency-hopping or redundant method as there are tranceivers. This makes excellent use of limited RF bandwidth, but is extremely vulnerable to interference.
see also: frequency-hopping.