Design of Millimeter Wave Baseband Receiver for New-Generation Wireless Communications Based on Filter Bank Multicarrier Technique

Autor: Liu, Chun-Yi, 劉峻溢
Rok vydání: 2017
Druh dokumentu: 學位論文 ; thesis
Popis: 105
In order to meet the explosive growth of communication traffic in the coming years, one of the key technologies in the new-generation wireless communications is a disruptive move to millimeter wave spectrum with wider bandwidth for data transmission. Moreover, new waveform techniques are receiving particular attention in wireless communication systems. A number of research organizations regard the filter bank multi carrier (FBMC) as a strong 5G candidate because FBMC has the excellent spectral containment as compared with OFDM. Therefore, the main goal of this thesis is combining the mmWave band transmission and new waveforms for providing higher data rate and transmission efficiency to meet the requirement of new-generation wireless transmission. First, in this thesis, we propose an 8X-parallelism SC/OFDM dual-mode baseband receiver for IEEE 802.11ad and IEEE 802.15.3c which can conquer the NLOS and LOS channels. For satisfying the 2.64 GHz specified in the standards, the proposed dual-mode baseband receiver is implemented with a deep pipelining, feed-forward and 8X-parallelism architecture. In order to reduce the cost of hardware implementation, the proposed dual-mode architecture unifies the algorithms used so that memory module sharing reaches 99% and reduces 51% memory usage, respectively. The dual-mode baseband receiver chip is designed with 40 nm CMOS GP process. The measurement results show the fabricated chip could operate at 330/500 MHz operating frequency, supporting the PHY data rate up to 9.24/14 Gb/s. Then, we present a FBMC mode baseband receiver scheme based on IEEE 802.11ad and IEEE 802.15.3c to enhance the transmission efficiency and spectral containment in OFDM mode. In the FBMC mode, we adopt the filter coefficients proposed by PHYDYAS project to implement the prototype filters which are embedded into the transmitter and receiver sides. We also propose a novel memory access reordering polyphase network (PPN) architecture to realize the prototype filter. Also, the auxiliary pilot and pilot arrangements are also proposed to solve the problem that the intrinsic interference affect the inserted pilot subcarriers at the transmitter side. Thanks to the excellent spectral containment of FBMC, the bandwidth efficiency could be increased a lot by inserting more data subcarriers on the guard-band subcarriers. However, this method will cause that band edge data subcarriers suffer more serious sampling clock offset (SCO), and varying amplitude distortion from the time domain interpolator, which is used to compensate the SCO effect in the synchronization stage. Thus, we propose an interpolation based method to solve this problem. In addition, the removal of cyclic prefix (CP) in FBMC causing the inter-symbol interference (ISI) and will destroy the performance of baseband system. In view of this, an MMSE joint feedback feed-forward equalizer (MJFFE) is proposed to deterministically suppress the ISI and inter-carrier interference (ICI) suffered by the FBMC in a long multipath channel. Finally, the proposed FBMC-OQAM baseband receiver is integrated to the proposed dual-mode baseband receiver for realizing a SC/OFDM/FBMC triple-mode baseband receiver. According to the synthesis results, SC, OFDM and FBMC could support the PHY data rate up to 7 Gb/s, 14 Gb/s, 21.4 Gb/s respectively while operating at the clock rate of 500 MHz. Most importantly, FBMC mode as compared to the OFDM mode baseband receiver, only requires 38% area cost to pay the enhancements of 8.5% spectral efficiency and 41% bandwidth efficiency, respectively. In total, FBMC mode increases 53% data rate as compared to OFDM mode.
Databáze: Networked Digital Library of Theses & Dissertations
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