METHODS AND PROCEDURES FOR POLAR CODED MODULATION

Smart overview of the Invention

Methods, apparatuses, and systems are outlined for constructing and modulating polar codes. These methods address nonuniform channel conditions by selecting an appropriate modulation order and configuring multiple component codes with incremental ratios for Unequal Error Protection (UEP). Initial code construction parameters are identified for each component code, and then modified based on these incremental ratios. Encoding of component polar codes follows the modified parameters, which involves calculating and comparing reliability values using a Polarization Weight (PW)-based method.

Background

Polar codes are recognized as the first channel code type analytically proven to achieve capacity. They perform comparably to traditional LDPC or turbo codes, especially at small to medium block lengths, with low error floors when aided by embedded CRC. Despite their low encoding and decoding complexities, the complexity can increase with larger block lengths or CRC-aided list decoding, posing challenges for high throughput applications like 5G NR eMBB data rates (~20 Gbps) and beyond.

Detailed System Description

The communications system, as illustrated in FIG. 1A, supports multiple wireless users accessing various content types through shared resources like wireless bandwidth. It may utilize different channel access methods such as CDMA, TDMA, FDMA, OFDMA, SC-FDMA, among others. The system includes wireless transmit/receive units (WTRUs), a radio access network (RAN), a core network (CN), and connections to other networks like the Internet.

Components and Technology

WTRUs can be any device capable of operating in a wireless environment, such as smartphones, laptops, IoT devices, etc. Base stations within the RAN facilitate access to communication networks and can be configured with technologies such as LTE or NR Radio Access. These stations may employ MIMO technology for efficient signal transmission across sectors within a cell.

Connectivity and Applications

The system supports various radio technologies including LTE and NR Radio Access, possibly using dual connectivity principles. It can establish WLANs or WPANs using technologies like IEEE 802.11 or IEEE 802.15. Base stations may also set up localized networks in specific areas such as homes or industrial facilities and connect directly to the Internet without relying on the core network.