  In this article, a novel approach for mobile radio communications is proposed
and analysed, which is promising for future 6G cooperative distributed MIMO
systems. The fundamental idea is a new mechanism namely start stop bit method,
which transmits bit sequences as the start/stop bits of a synchronized counter
instead of transmitting the full encoded bit sequence itself. In that way,
theoretically, we can transmit infinitely long data messages with only one bit
for starting and one bit for stopping the counter. The value of the counter, as
identified by the stop bit, is then used to reconstruct and remap the one and
unique transmitted bit sequence. The start stop bit method is characterized by
a high signal sparsity as only two bits are transmitted, independently of the
bit sequence length for the message. Among the benefits of the start stop bit
method are energy efficient data transmission, and effective distributed MIMO
systems, which exploit the sparse inter cooperation area interference as well
as the low processing complexity for the sparse precoder calculation. Moreover,
for the next mobile wireless generation, we propose an advanced scheme of the
start stop bit method which enhances its resource usage. We call the resulting
method a sparse dMIMO system.
