EXIT-chart aided near-capacity Irregular Bit-Interleaved Coded Modulation design

EXIT Charts for System Design and Analysis

“…Furthermore, in [110] a near-capacity irregular BICM-ID (Ir-BICM-ID) scheme was designed, which adopted a design philosophy similar to that of the IrCC scheme of [34,38]. It was shown in [110] that the irregular design of the Ir-BICM-ID scheme pervades the three basic components of BICM-ID, namely the encoder, the unity-rate precoder and the bit-to-symbol mapper, where the proposed ir-BICM-ID schemes are capable of approaching the capacity of coded modulation.…”

“…Furthermore, in [110] a near-capacity irregular BICM-ID (Ir-BICM-ID) scheme was designed, which adopted a design philosophy similar to that of the IrCC scheme of [34,38]. It was shown in [110] that the irregular design of the Ir-BICM-ID scheme pervades the three basic components of BICM-ID, namely the encoder, the unity-rate precoder and the bit-to-symbol mapper, where the proposed ir-BICM-ID schemes are capable of approaching the capacity of coded modulation. Furthermore, since the appropriate choice of the bit-to-symbol mapping, which is also often referred to as constellation labelling, is essential in the design of BICM-ID, EXIT charts were used to design this labelling for BICM-ID in [111].…”

“…Hence, this facilitates operation at E b /N 0 values that are closer to the channel's capacity bound. Additionally, another irregular design based on EXIT charts was proposed in [110], where a near-capacity Irregular BICM-ID (Ir-BICM-ID) scheme was proposed. The irregular design of the scheme uses the three components of BICM-ID, namely the encoder, the URC and the bit-to-symbol mapper.…”

Near-Capacity Wireless System Design Principles

“…It was shown in [59], [60] that a recursive URC should be employed as an intermediate code in order to improve the attainable decoding convergence. More specifically, we will show that a URC can be used as a precoder for creating an inner code component having an Infinite Impulse Response (IIR) in order to reach the (1,1) point of perfect decoding convergence in the EXIT chart and hence to achieve an infinitesimally low Bit Error Ratio (BER) [61]. The inner most stage can be a coherent/noncoherent base detector itself for the coherent/noncoherent schemes or STTCs for the MIMO and VMIMO schemes.…”

“…The SCC codes have recently provoked a number of research work focusing on near-capacity EXIT chart aided coding designs [38]- [55], which may be categorised into several sub-areas, as seen in Fig. 1, namely SISO schemes based on coherent detection [40], [41], [43], Noncoherent detection based SISO schemes [50], [51], MIMO schemes [39], [44], [46]- [48], [53], [54], VMIMO schemes Elias [19] Introduced convolutional codes.…”