A coded modulation scheme for the Poisson channel is investigated. The scheme relies on the serial concatenation of an outer low-density parity-check (LDPC) code over an order-q finite field and q-ary ...

In this paper, two new modulation schemes using multilevel pulse-position modulation (PPM) for application in unipolar optical wireless systems are presented. Balanced incomplete block designs (BIBD) ...

Click here for Figure 1 Figure 1: Block diagram of the proposed 10 Gigabit Ethernet QAM-encoded modulation scheme. Quadrature amplitude modulation (QAM) is a modulation scheme whereby multiple bits ...