Dynamic Resource Allocation with Precoding for OFDMA-Based Wireless Multicast Systems

Multicast Scheduling and Resource Allocation Algorithms for OFDMA-Based Systems: A Survey

“…This is equivalent to assigning subcarrier n to group g with maximum SNR or highest channel gain noting that each group rate is based on worst channel user. Similar works for single multicast MIMO using spatial multiplexing and multi-multicast MIMO using weighting precoding are done in [5] and [16] respectively. These works further define two additional approximations for eqn.…”

“…These technologies have been widely adopted as multimedia broadcast multicast services (MBMS) in few cellular standards such as IEEE802. 16 (Fixed and Mobile WiMAX) and the 3GPP Long Term Evolution (LTE) to accommodate high speed mobility as well as support high rates for nomadic and mobile users [8].…”

“…Of particular challenge is the resulting optimization problem of multiple antenna complexities at both the BS and individual users. Specifically, [5] and [16] are among the few works investigating MIMO techniques in multicast. Hence, MSRA in wireless networks is currently a research area with many open issues.…”

Adaptive user selection of opportunistic multicast scheduling in wireless networks

“…Since BMS is a hot topic for future wireless communication systems, there have been many researches investigating the conventional multicast scheduling scheme (MS‐con). In MS‐con, the base station (BS) always selects the user with the worst channel gain as the baseline to determine the transmission rate [4–10]. The resource allocation problem for one multicast group was investigated in [4, 5].…”

“…To improve the system throughput performance while ensuring fairness constraints, a subcarrier cooperation and user grouping resource allocation method was proposed [7]. In [8], the multi‐antenna multicast system was considered and a resource allocation scheme based on precoding was proposed. In [9], the single frequency network was investigated and the authors proposed an efficient resource allocation scheme based on limited feedback.…”