Layered Multimedia Broadcast Using Rateless Codes with Progressive Recovery Over Cooperative MIMO
This paper proposes a novel scheme, based on unequal error protected rate-less codes, for broadcasting layered multimedia over cooperative Multiple-Input Multiple-Output (MIMO). By taking advantage of both cooperation and broadcasting, the authors first present a two-phase cooperative MIMO broadcast scheme, which exploits distributed diversity in point-to-multipoint communication scenarios. Then, to enhance layered multimedia transmission with progressive recovery, the Progressive Rate-less Codes (PRC) is proposed to recover the layered data according to their importance at the expected received ratio of all output packets. Thus, receivers with different packet loss rate can achieve an adaptive recovery of the layered multimedia progressively.